app/testpmd: use a structure to store offload info in csum fwd engine
To simplify the API of parse_* functions, store all the offload information for the current packet in a structure. No functional change. Signed-off-by: Olivier Matz <olivier.matz@6wind.com> Acked-by: Jijiang Liu <jijiang.liu@intel.com>
This commit is contained in:
Olivier Matz
Thomas Monjalon
parent
160c3dc945
commit
c5b6033110
@ -86,6 +86,21 @@
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#define _htons(x) (x)
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#endif
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/* structure that caches offload info for the current packet */
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struct testpmd_offload_info {
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uint16_t ethertype;
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uint16_t l2_len;
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uint16_t l3_len;
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uint16_t l4_len;
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uint8_t l4_proto;
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uint8_t l4_tun_len;
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uint8_t is_tunnel;
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uint16_t outer_ethertype;
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uint16_t outer_l2_len;
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uint16_t outer_l3_len;
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uint16_t tso_segsz;
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};
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static uint16_t
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get_psd_sum(void *l3_hdr, uint16_t ethertype, uint64_t ol_flags)
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{
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@ -106,38 +121,36 @@ get_udptcp_checksum(void *l3_hdr, void *l4_hdr, uint16_t ethertype)
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/* Parse an IPv4 header to fill l3_len, l4_len, and l4_proto */
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static void
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parse_ipv4(struct ipv4_hdr *ipv4_hdr, uint16_t *l3_len, uint8_t *l4_proto,
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uint16_t *l4_len)
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parse_ipv4(struct ipv4_hdr *ipv4_hdr, struct testpmd_offload_info *info)
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{
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struct tcp_hdr *tcp_hdr;
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*l3_len = (ipv4_hdr->version_ihl & 0x0f) * 4;
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*l4_proto = ipv4_hdr->next_proto_id;
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info->l3_len = (ipv4_hdr->version_ihl & 0x0f) * 4;
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info->l4_proto = ipv4_hdr->next_proto_id;
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/* only fill l4_len for TCP, it's useful for TSO */
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if (*l4_proto == IPPROTO_TCP) {
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tcp_hdr = (struct tcp_hdr *)((char *)ipv4_hdr + *l3_len);
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*l4_len = (tcp_hdr->data_off & 0xf0) >> 2;
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if (info->l4_proto == IPPROTO_TCP) {
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tcp_hdr = (struct tcp_hdr *)((char *)ipv4_hdr + info->l3_len);
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info->l4_len = (tcp_hdr->data_off & 0xf0) >> 2;
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} else
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*l4_len = 0;
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info->l4_len = 0;
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}
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/* Parse an IPv6 header to fill l3_len, l4_len, and l4_proto */
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static void
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parse_ipv6(struct ipv6_hdr *ipv6_hdr, uint16_t *l3_len, uint8_t *l4_proto,
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uint16_t *l4_len)
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parse_ipv6(struct ipv6_hdr *ipv6_hdr, struct testpmd_offload_info *info)
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{
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struct tcp_hdr *tcp_hdr;
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*l3_len = sizeof(struct ipv6_hdr);
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*l4_proto = ipv6_hdr->proto;
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info->l3_len = sizeof(struct ipv6_hdr);
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info->l4_proto = ipv6_hdr->proto;
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/* only fill l4_len for TCP, it's useful for TSO */
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if (*l4_proto == IPPROTO_TCP) {
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tcp_hdr = (struct tcp_hdr *)((char *)ipv6_hdr + *l3_len);
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*l4_len = (tcp_hdr->data_off & 0xf0) >> 2;
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if (info->l4_proto == IPPROTO_TCP) {
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tcp_hdr = (struct tcp_hdr *)((char *)ipv6_hdr + info->l3_len);
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info->l4_len = (tcp_hdr->data_off & 0xf0) >> 2;
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} else
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*l4_len = 0;
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info->l4_len = 0;
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}
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/*
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@ -146,35 +159,34 @@ parse_ipv6(struct ipv6_hdr *ipv6_hdr, uint16_t *l3_len, uint8_t *l4_proto,
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* header. The l4_len argument is only set in case of TCP (useful for TSO).
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*/
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static void
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parse_ethernet(struct ether_hdr *eth_hdr, uint16_t *ethertype, uint16_t *l2_len,
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uint16_t *l3_len, uint8_t *l4_proto, uint16_t *l4_len)
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parse_ethernet(struct ether_hdr *eth_hdr, struct testpmd_offload_info *info)
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{
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struct ipv4_hdr *ipv4_hdr;
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struct ipv6_hdr *ipv6_hdr;
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*l2_len = sizeof(struct ether_hdr);
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*ethertype = eth_hdr->ether_type;
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info->l2_len = sizeof(struct ether_hdr);
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info->ethertype = eth_hdr->ether_type;
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if (*ethertype == _htons(ETHER_TYPE_VLAN)) {
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if (info->ethertype == _htons(ETHER_TYPE_VLAN)) {
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struct vlan_hdr *vlan_hdr = (struct vlan_hdr *)(eth_hdr + 1);
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*l2_len += sizeof(struct vlan_hdr);
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*ethertype = vlan_hdr->eth_proto;
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info->l2_len += sizeof(struct vlan_hdr);
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info->ethertype = vlan_hdr->eth_proto;
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}
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switch (*ethertype) {
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switch (info->ethertype) {
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case _htons(ETHER_TYPE_IPv4):
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ipv4_hdr = (struct ipv4_hdr *) ((char *)eth_hdr + *l2_len);
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parse_ipv4(ipv4_hdr, l3_len, l4_proto, l4_len);
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ipv4_hdr = (struct ipv4_hdr *) ((char *)eth_hdr + info->l2_len);
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parse_ipv4(ipv4_hdr, info);
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break;
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case _htons(ETHER_TYPE_IPv6):
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ipv6_hdr = (struct ipv6_hdr *) ((char *)eth_hdr + *l2_len);
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parse_ipv6(ipv6_hdr, l3_len, l4_proto, l4_len);
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ipv6_hdr = (struct ipv6_hdr *) ((char *)eth_hdr + info->l2_len);
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parse_ipv6(ipv6_hdr, info);
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break;
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default:
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*l4_len = 0;
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*l3_len = 0;
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*l4_proto = 0;
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info->l4_len = 0;
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info->l3_len = 0;
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info->l4_proto = 0;
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break;
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}
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}
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@ -197,8 +209,8 @@ change_ip_addresses(void *l3_hdr, uint16_t ethertype)
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/* if possible, calculate the checksum of a packet in hw or sw,
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* depending on the testpmd command line configuration */
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static uint64_t
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process_inner_cksums(void *l3_hdr, uint16_t ethertype, uint16_t l3_len,
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uint8_t l4_proto, uint16_t tso_segsz, uint16_t testpmd_ol_flags)
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process_inner_cksums(void *l3_hdr, const struct testpmd_offload_info *info,
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uint16_t testpmd_ol_flags)
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{
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struct ipv4_hdr *ipv4_hdr = l3_hdr;
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struct udp_hdr *udp_hdr;
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@ -206,12 +218,12 @@ process_inner_cksums(void *l3_hdr, uint16_t ethertype, uint16_t l3_len,
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struct sctp_hdr *sctp_hdr;
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uint64_t ol_flags = 0;
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if (ethertype == _htons(ETHER_TYPE_IPv4)) {
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if (info->ethertype == _htons(ETHER_TYPE_IPv4)) {
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ipv4_hdr = l3_hdr;
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ipv4_hdr->hdr_checksum = 0;
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ol_flags |= PKT_TX_IPV4;
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if (tso_segsz != 0 && l4_proto == IPPROTO_TCP) {
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if (info->tso_segsz != 0 && info->l4_proto == IPPROTO_TCP) {
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ol_flags |= PKT_TX_IP_CKSUM;
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} else {
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if (testpmd_ol_flags & TESTPMD_TX_OFFLOAD_IP_CKSUM)
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@ -220,41 +232,44 @@ process_inner_cksums(void *l3_hdr, uint16_t ethertype, uint16_t l3_len,
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ipv4_hdr->hdr_checksum =
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rte_ipv4_cksum(ipv4_hdr);
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}
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} else if (ethertype == _htons(ETHER_TYPE_IPv6))
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} else if (info->ethertype == _htons(ETHER_TYPE_IPv6))
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ol_flags |= PKT_TX_IPV6;
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else
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return 0; /* packet type not supported, nothing to do */
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if (l4_proto == IPPROTO_UDP) {
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udp_hdr = (struct udp_hdr *)((char *)l3_hdr + l3_len);
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if (info->l4_proto == IPPROTO_UDP) {
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udp_hdr = (struct udp_hdr *)((char *)l3_hdr + info->l3_len);
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/* do not recalculate udp cksum if it was 0 */
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if (udp_hdr->dgram_cksum != 0) {
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udp_hdr->dgram_cksum = 0;
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if (testpmd_ol_flags & TESTPMD_TX_OFFLOAD_UDP_CKSUM) {
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ol_flags |= PKT_TX_UDP_CKSUM;
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udp_hdr->dgram_cksum = get_psd_sum(l3_hdr,
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ethertype, ol_flags);
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info->ethertype, ol_flags);
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} else {
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udp_hdr->dgram_cksum =
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get_udptcp_checksum(l3_hdr, udp_hdr,
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ethertype);
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info->ethertype);
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}
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}
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} else if (l4_proto == IPPROTO_TCP) {
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tcp_hdr = (struct tcp_hdr *)((char *)l3_hdr + l3_len);
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} else if (info->l4_proto == IPPROTO_TCP) {
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tcp_hdr = (struct tcp_hdr *)((char *)l3_hdr + info->l3_len);
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tcp_hdr->cksum = 0;
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if (tso_segsz != 0) {
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if (info->tso_segsz != 0) {
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ol_flags |= PKT_TX_TCP_SEG;
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tcp_hdr->cksum = get_psd_sum(l3_hdr, ethertype, ol_flags);
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tcp_hdr->cksum = get_psd_sum(l3_hdr, info->ethertype,
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ol_flags);
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} else if (testpmd_ol_flags & TESTPMD_TX_OFFLOAD_TCP_CKSUM) {
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ol_flags |= PKT_TX_TCP_CKSUM;
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tcp_hdr->cksum = get_psd_sum(l3_hdr, ethertype, ol_flags);
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tcp_hdr->cksum = get_psd_sum(l3_hdr, info->ethertype,
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ol_flags);
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} else {
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tcp_hdr->cksum =
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get_udptcp_checksum(l3_hdr, tcp_hdr, ethertype);
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get_udptcp_checksum(l3_hdr, tcp_hdr,
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info->ethertype);
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}
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} else if (l4_proto == IPPROTO_SCTP) {
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sctp_hdr = (struct sctp_hdr *)((char *)l3_hdr + l3_len);
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} else if (info->l4_proto == IPPROTO_SCTP) {
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sctp_hdr = (struct sctp_hdr *)((char *)l3_hdr + info->l3_len);
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sctp_hdr->cksum = 0;
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/* sctp payload must be a multiple of 4 to be
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* offloaded */
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@ -274,15 +289,15 @@ process_inner_cksums(void *l3_hdr, uint16_t ethertype, uint16_t l3_len,
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* meaning IP + UDP). The caller already checked that it's a vxlan
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* packet */
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static uint64_t
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process_outer_cksums(void *outer_l3_hdr, uint16_t outer_ethertype,
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uint16_t outer_l3_len, uint16_t testpmd_ol_flags)
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process_outer_cksums(void *outer_l3_hdr, struct testpmd_offload_info *info,
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uint16_t testpmd_ol_flags)
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{
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struct ipv4_hdr *ipv4_hdr = outer_l3_hdr;
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struct ipv6_hdr *ipv6_hdr = outer_l3_hdr;
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struct udp_hdr *udp_hdr;
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uint64_t ol_flags = 0;
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if (outer_ethertype == _htons(ETHER_TYPE_IPv4)) {
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if (info->outer_ethertype == _htons(ETHER_TYPE_IPv4)) {
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ipv4_hdr->hdr_checksum = 0;
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ol_flags |= PKT_TX_OUTER_IPV4;
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@ -296,11 +311,11 @@ process_outer_cksums(void *outer_l3_hdr, uint16_t outer_ethertype,
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/* outer UDP checksum is always done in software as we have no
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* hardware supporting it today, and no API for it. */
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udp_hdr = (struct udp_hdr *)((char *)outer_l3_hdr + outer_l3_len);
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udp_hdr = (struct udp_hdr *)((char *)outer_l3_hdr + info->outer_l3_len);
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/* do not recalculate udp cksum if it was 0 */
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if (udp_hdr->dgram_cksum != 0) {
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udp_hdr->dgram_cksum = 0;
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if (outer_ethertype == _htons(ETHER_TYPE_IPv4))
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if (info->outer_ethertype == _htons(ETHER_TYPE_IPv4))
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udp_hdr->dgram_cksum =
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rte_ipv4_udptcp_cksum(ipv4_hdr, udp_hdr);
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else
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@ -347,14 +362,9 @@ pkt_burst_checksum_forward(struct fwd_stream *fs)
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uint16_t i;
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uint64_t ol_flags;
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uint16_t testpmd_ol_flags;
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uint8_t l4_proto, l4_tun_len = 0;
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uint16_t ethertype = 0, outer_ethertype = 0;
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uint16_t l2_len = 0, l3_len = 0, l4_len = 0;
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uint16_t outer_l2_len = 0, outer_l3_len = 0;
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uint16_t tso_segsz;
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int tunnel = 0;
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uint32_t rx_bad_ip_csum;
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uint32_t rx_bad_l4_csum;
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struct testpmd_offload_info info;
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#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
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uint64_t start_tsc;
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@ -381,13 +391,13 @@ pkt_burst_checksum_forward(struct fwd_stream *fs)
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txp = &ports[fs->tx_port];
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testpmd_ol_flags = txp->tx_ol_flags;
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tso_segsz = txp->tso_segsz;
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memset(&info, 0, sizeof(info));
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info.tso_segsz = txp->tso_segsz;
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for (i = 0; i < nb_rx; i++) {
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ol_flags = 0;
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tunnel = 0;
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l4_tun_len = 0;
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info.is_tunnel = 0;
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m = pkts_burst[i];
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/* Update the L3/L4 checksum error packet statistics */
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@ -398,49 +408,47 @@ pkt_burst_checksum_forward(struct fwd_stream *fs)
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* and inner headers */
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eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
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parse_ethernet(eth_hdr, ðertype, &l2_len, &l3_len,
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&l4_proto, &l4_len);
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l3_hdr = (char *)eth_hdr + l2_len;
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parse_ethernet(eth_hdr, &info);
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l3_hdr = (char *)eth_hdr + info.l2_len;
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/* check if it's a supported tunnel (only vxlan for now) */
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if ((testpmd_ol_flags & TESTPMD_TX_OFFLOAD_PARSE_TUNNEL) &&
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l4_proto == IPPROTO_UDP) {
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udp_hdr = (struct udp_hdr *)((char *)l3_hdr + l3_len);
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info.l4_proto == IPPROTO_UDP) {
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udp_hdr = (struct udp_hdr *)((char *)l3_hdr + info.l3_len);
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/* check udp destination port, 4789 is the default
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* vxlan port (rfc7348) */
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if (udp_hdr->dst_port == _htons(4789)) {
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l4_tun_len = ETHER_VXLAN_HLEN;
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tunnel = 1;
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info.l4_tun_len = ETHER_VXLAN_HLEN;
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info.is_tunnel = 1;
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/* currently, this flag is set by i40e only if the
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* packet is vxlan */
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} else if (m->ol_flags & (PKT_RX_TUNNEL_IPV4_HDR |
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PKT_RX_TUNNEL_IPV6_HDR))
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tunnel = 1;
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info.is_tunnel = 1;
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if (tunnel == 1) {
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outer_ethertype = ethertype;
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outer_l2_len = l2_len;
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outer_l3_len = l3_len;
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if (info.is_tunnel == 1) {
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info.outer_ethertype = info.ethertype;
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info.outer_l2_len = info.l2_len;
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info.outer_l3_len = info.l3_len;
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outer_l3_hdr = l3_hdr;
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eth_hdr = (struct ether_hdr *)((char *)udp_hdr +
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sizeof(struct udp_hdr) +
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sizeof(struct vxlan_hdr));
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parse_ethernet(eth_hdr, ðertype, &l2_len,
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&l3_len, &l4_proto, &l4_len);
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l3_hdr = (char *)eth_hdr + l2_len;
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parse_ethernet(eth_hdr, &info);
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l3_hdr = (char *)eth_hdr + info.l2_len;
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}
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}
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/* step 2: change all source IPs (v4 or v6) so we need
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* to recompute the chksums even if they were correct */
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change_ip_addresses(l3_hdr, ethertype);
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if (tunnel == 1)
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change_ip_addresses(outer_l3_hdr, outer_ethertype);
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change_ip_addresses(l3_hdr, info.ethertype);
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if (info.is_tunnel == 1)
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change_ip_addresses(outer_l3_hdr, info.outer_ethertype);
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/* step 3: depending on user command line configuration,
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* recompute checksum either in software or flag the
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@ -448,25 +456,24 @@ pkt_burst_checksum_forward(struct fwd_stream *fs)
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* is configured, prepare the mbuf for TCP segmentation. */
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/* process checksums of inner headers first */
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ol_flags |= process_inner_cksums(l3_hdr, ethertype,
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l3_len, l4_proto, tso_segsz, testpmd_ol_flags);
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ol_flags |= process_inner_cksums(l3_hdr, &info, testpmd_ol_flags);
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/* Then process outer headers if any. Note that the software
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* checksum will be wrong if one of the inner checksums is
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* processed in hardware. */
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if (tunnel == 1) {
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ol_flags |= process_outer_cksums(outer_l3_hdr,
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outer_ethertype, outer_l3_len, testpmd_ol_flags);
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if (info.is_tunnel == 1) {
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ol_flags |= process_outer_cksums(outer_l3_hdr, &info,
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testpmd_ol_flags);
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}
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/* step 4: fill the mbuf meta data (flags and header lengths) */
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|
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if (tunnel == 1) {
|
||||
if (info.is_tunnel == 1) {
|
||||
if (testpmd_ol_flags & TESTPMD_TX_OFFLOAD_OUTER_IP_CKSUM) {
|
||||
m->outer_l2_len = outer_l2_len;
|
||||
m->outer_l3_len = outer_l3_len;
|
||||
m->l2_len = l4_tun_len + l2_len;
|
||||
m->l3_len = l3_len;
|
||||
m->outer_l2_len = info.outer_l2_len;
|
||||
m->outer_l3_len = info.outer_l3_len;
|
||||
m->l2_len = info.l4_tun_len + info.l2_len;
|
||||
m->l3_len = info.l3_len;
|
||||
}
|
||||
else {
|
||||
/* if there is a outer UDP cksum
|
||||
@ -474,21 +481,22 @@ pkt_burst_checksum_forward(struct fwd_stream *fs)
|
||||
the outer checksum will be wrong as
|
||||
the payload will be modified by the
|
||||
hardware */
|
||||
m->l2_len = outer_l2_len + outer_l3_len +
|
||||
m->l2_len = info.outer_l2_len +
|
||||
info.outer_l3_len +
|
||||
sizeof(struct udp_hdr) +
|
||||
sizeof(struct vxlan_hdr) + l2_len;
|
||||
m->l3_len = l3_len;
|
||||
m->l4_len = l4_len;
|
||||
sizeof(struct vxlan_hdr) + info.l2_len;
|
||||
m->l3_len = info.l3_len;
|
||||
m->l4_len = info.l4_len;
|
||||
}
|
||||
} else {
|
||||
/* this is only useful if an offload flag is
|
||||
* set, but it does not hurt to fill it in any
|
||||
* case */
|
||||
m->l2_len = l2_len;
|
||||
m->l3_len = l3_len;
|
||||
m->l4_len = l4_len;
|
||||
m->l2_len = info.l2_len;
|
||||
m->l3_len = info.l3_len;
|
||||
m->l4_len = info.l4_len;
|
||||
}
|
||||
m->tso_segsz = tso_segsz;
|
||||
m->tso_segsz = info.tso_segsz;
|
||||
m->ol_flags = ol_flags;
|
||||
|
||||
/* if verbose mode is enabled, dump debug info */
|
||||
@ -515,27 +523,27 @@ pkt_burst_checksum_forward(struct fwd_stream *fs)
|
||||
/* dump rx parsed packet info */
|
||||
printf("rx: l2_len=%d ethertype=%x l3_len=%d "
|
||||
"l4_proto=%d l4_len=%d\n",
|
||||
l2_len, rte_be_to_cpu_16(ethertype),
|
||||
l3_len, l4_proto, l4_len);
|
||||
if (tunnel == 1)
|
||||
info.l2_len, rte_be_to_cpu_16(info.ethertype),
|
||||
info.l3_len, info.l4_proto, info.l4_len);
|
||||
if (info.is_tunnel == 1)
|
||||
printf("rx: outer_l2_len=%d outer_ethertype=%x "
|
||||
"outer_l3_len=%d\n", outer_l2_len,
|
||||
rte_be_to_cpu_16(outer_ethertype),
|
||||
outer_l3_len);
|
||||
"outer_l3_len=%d\n", info.outer_l2_len,
|
||||
rte_be_to_cpu_16(info.outer_ethertype),
|
||||
info.outer_l3_len);
|
||||
/* dump tx packet info */
|
||||
if ((testpmd_ol_flags & (TESTPMD_TX_OFFLOAD_IP_CKSUM |
|
||||
TESTPMD_TX_OFFLOAD_UDP_CKSUM |
|
||||
TESTPMD_TX_OFFLOAD_TCP_CKSUM |
|
||||
TESTPMD_TX_OFFLOAD_SCTP_CKSUM)) ||
|
||||
tso_segsz != 0)
|
||||
info.tso_segsz != 0)
|
||||
printf("tx: m->l2_len=%d m->l3_len=%d "
|
||||
"m->l4_len=%d\n",
|
||||
m->l2_len, m->l3_len, m->l4_len);
|
||||
if ((tunnel == 1) &&
|
||||
if ((info.is_tunnel == 1) &&
|
||||
(testpmd_ol_flags & TESTPMD_TX_OFFLOAD_OUTER_IP_CKSUM))
|
||||
printf("tx: m->outer_l2_len=%d m->outer_l3_len=%d\n",
|
||||
m->outer_l2_len, m->outer_l3_len);
|
||||
if (tso_segsz != 0)
|
||||
if (info.tso_segsz != 0)
|
||||
printf("tx: m->tso_segsz=%d\n", m->tso_segsz);
|
||||
printf("tx: flags=");
|
||||
for (j = 0; j < sizeof(tx_flags)/sizeof(*tx_flags); j++) {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user