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cxgbe(4): Add rate limiting support for UDP.

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MFC after:	1 month
Sponsored by:	Chelsio Communications
This commit is contained in:
Navdeep Parhar 2018-10-31 19:19:13 +00:00
parent 1272051e82
commit 6933902df4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=339967
1 changed files with 46 additions and 35 deletions
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81
sys/dev/cxgbe/t4_sge.c
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@ -5610,10 +5610,6 @@ write_ethofld_wr(struct cxgbe_snd_tag *cst, struct fw_eth_tx_eo_wr *wr,
m0->m_pkthdr.l4hlen > 0,
("%s: ethofld mbuf %p is missing header lengths", __func__, m0));
if (needs_udp_csum(m0)) {
CXGBE_UNIMPLEMENTED("UDP ethofld");
}
len16 = mbuf_eo_len16(m0);
nsegs = mbuf_eo_nsegs(m0);
pktlen = m0->m_pkthdr.len;
@ -5628,37 +5624,52 @@ write_ethofld_wr(struct cxgbe_snd_tag *cst, struct fw_eth_tx_eo_wr *wr,
wr->equiq_to_len16 = htobe32(V_FW_WR_LEN16(len16) |
V_FW_WR_FLOWID(cst->etid));
wr->r3 = 0;
wr->u.tcpseg.type = FW_ETH_TX_EO_TYPE_TCPSEG;
wr->u.tcpseg.ethlen = m0->m_pkthdr.l2hlen;
wr->u.tcpseg.iplen = htobe16(m0->m_pkthdr.l3hlen);
wr->u.tcpseg.tcplen = m0->m_pkthdr.l4hlen;
wr->u.tcpseg.tsclk_tsoff = mbuf_eo_tsclk_tsoff(m0);
wr->u.tcpseg.r4 = 0;
wr->u.tcpseg.r5 = 0;
wr->u.tcpseg.plen = htobe32(pktlen - immhdrs);
if (needs_tso(m0)) {
struct cpl_tx_pkt_lso_core *lso = (void *)(wr + 1);
wr->u.tcpseg.mss = htobe16(m0->m_pkthdr.tso_segsz);
ctrl = V_LSO_OPCODE(CPL_TX_PKT_LSO) | F_LSO_FIRST_SLICE |
F_LSO_LAST_SLICE | V_LSO_IPHDR_LEN(m0->m_pkthdr.l3hlen >> 2)
| V_LSO_TCPHDR_LEN(m0->m_pkthdr.l4hlen >> 2);
if (m0->m_pkthdr.l2hlen == sizeof(struct ether_vlan_header))
ctrl |= V_LSO_ETHHDR_LEN(1);
if (m0->m_pkthdr.l3hlen == sizeof(struct ip6_hdr))
ctrl |= F_LSO_IPV6;
lso->lso_ctrl = htobe32(ctrl);
lso->ipid_ofst = htobe16(0);
lso->mss = htobe16(m0->m_pkthdr.tso_segsz);
lso->seqno_offset = htobe32(0);
lso->len = htobe32(pktlen);
cpl = (void *)(lso + 1);
} else {
wr->u.tcpseg.mss = htobe16(0xffff);
if (needs_udp_csum(m0)) {
wr->u.udpseg.type = FW_ETH_TX_EO_TYPE_UDPSEG;
wr->u.udpseg.ethlen = m0->m_pkthdr.l2hlen;
wr->u.udpseg.iplen = htobe16(m0->m_pkthdr.l3hlen);
wr->u.udpseg.udplen = m0->m_pkthdr.l4hlen;
wr->u.udpseg.rtplen = 0;
wr->u.udpseg.r4 = 0;
wr->u.udpseg.mss = htobe16(pktlen - immhdrs);
wr->u.udpseg.schedpktsize = wr->u.udpseg.mss;
wr->u.udpseg.plen = htobe32(pktlen - immhdrs);
cpl = (void *)(wr + 1);
} else {
MPASS(needs_tcp_csum(m0));
wr->u.tcpseg.type = FW_ETH_TX_EO_TYPE_TCPSEG;
wr->u.tcpseg.ethlen = m0->m_pkthdr.l2hlen;
wr->u.tcpseg.iplen = htobe16(m0->m_pkthdr.l3hlen);
wr->u.tcpseg.tcplen = m0->m_pkthdr.l4hlen;
wr->u.tcpseg.tsclk_tsoff = mbuf_eo_tsclk_tsoff(m0);
wr->u.tcpseg.r4 = 0;
wr->u.tcpseg.r5 = 0;
wr->u.tcpseg.plen = htobe32(pktlen - immhdrs);
if (needs_tso(m0)) {
struct cpl_tx_pkt_lso_core *lso = (void *)(wr + 1);
wr->u.tcpseg.mss = htobe16(m0->m_pkthdr.tso_segsz);
ctrl = V_LSO_OPCODE(CPL_TX_PKT_LSO) |
F_LSO_FIRST_SLICE | F_LSO_LAST_SLICE |
V_LSO_IPHDR_LEN(m0->m_pkthdr.l3hlen >> 2) |
V_LSO_TCPHDR_LEN(m0->m_pkthdr.l4hlen >> 2);
if (m0->m_pkthdr.l2hlen == sizeof(struct ether_vlan_header))
ctrl |= V_LSO_ETHHDR_LEN(1);
if (m0->m_pkthdr.l3hlen == sizeof(struct ip6_hdr))
ctrl |= F_LSO_IPV6;
lso->lso_ctrl = htobe32(ctrl);
lso->ipid_ofst = htobe16(0);
lso->mss = htobe16(m0->m_pkthdr.tso_segsz);
lso->seqno_offset = htobe32(0);
lso->len = htobe32(pktlen);
cpl = (void *)(lso + 1);
} else {
wr->u.tcpseg.mss = htobe16(0xffff);
cpl = (void *)(wr + 1);
}
}
/* Checksum offload must be requested for ethofld. */
@ -5677,7 +5688,7 @@ write_ethofld_wr(struct cxgbe_snd_tag *cst, struct fw_eth_tx_eo_wr *wr,
cpl->len = htobe16(pktlen);
cpl->ctrl1 = htobe64(ctrl1);
/* Copy Ethernet, IP & TCP hdrs as immediate data */
/* Copy Ethernet, IP & TCP/UDP hdrs as immediate data */
p = (uintptr_t)(cpl + 1);
m_copydata(m0, 0, immhdrs, (void *)p);