d/numam-dpdk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

net/sfc: support Tx preparation in EF10 datapath

Browse Source 
Implement tx_prepare callback and update Tx burst function accordingly.

Signed-off-by: Igor Romanov <igor.romanov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
This commit is contained in:
Igor Romanov 2019-04-02 10:28:37 +01:00 committed by Ferruh Yigit
parent 07685524c9
commit 67330d32b8
1 changed files with 46 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

56
drivers/net/sfc/sfc_ef10_tx.c
View File

@ -319,6 +319,44 @@ sfc_ef10_try_reap(struct sfc_ef10_txq * const txq, unsigned int added,
return (needed_desc <= *dma_desc_space);
}
static uint16_t
sfc_ef10_prepare_pkts(__rte_unused void *tx_queue, struct rte_mbuf **tx_pkts,
uint16_t nb_pkts)
{
uint16_t i;
for (i = 0; i < nb_pkts; i++) {
struct rte_mbuf *m = tx_pkts[i];
int ret;
#ifdef RTE_LIBRTE_SFC_EFX_DEBUG
/*
* In non-TSO case, check that a packet segments do not exceed
* the size limit. Perform the check in debug mode since MTU
* more than 9k is not supported, but the limit here is 16k-1.
*/
if (!(m->ol_flags & PKT_TX_TCP_SEG)) {
struct rte_mbuf *m_seg;
for (m_seg = m; m_seg != NULL; m_seg = m_seg->next) {
if (m_seg->data_len >
SFC_EF10_TX_DMA_DESC_LEN_MAX) {
rte_errno = EINVAL;
break;
}
}
}
#endif
ret = sfc_dp_tx_prepare_pkt(m);
if (unlikely(ret != 0)) {
rte_errno = ret;
break;
}
}
return i;
}
static int
sfc_ef10_xmit_tso_pkt(struct sfc_ef10_txq * const txq, struct rte_mbuf *m_seg,
unsigned int *added, unsigned int *dma_desc_space,
@ -330,7 +368,7 @@ sfc_ef10_xmit_tso_pkt(struct sfc_ef10_txq * const txq, struct rte_mbuf *m_seg,
/* Offset of the payload in the last segment that contains the header */
size_t in_off = 0;
const struct tcp_hdr *th;
uint16_t packet_id;
uint16_t packet_id = 0;
uint32_t sent_seq;
uint8_t *hdr_addr;
rte_iova_t hdr_iova;
@ -433,20 +471,17 @@ sfc_ef10_xmit_tso_pkt(struct sfc_ef10_txq * const txq, struct rte_mbuf *m_seg,
needed_desc--;
}
switch (first_m_seg->ol_flags & (PKT_TX_IPV4 | PKT_TX_IPV6)) {
case PKT_TX_IPV4: {
/*
* Tx prepare has debug-only checks that offload flags are correctly
* filled in in TSO mbuf. Use zero IPID if there is no IPv4 flag.
* If the packet is still IPv4, HW will simply start from zero IPID.
*/
if (first_m_seg->ol_flags & PKT_TX_IPV4) {
const struct ipv4_hdr *iphe4;
iphe4 = (const struct ipv4_hdr *)(hdr_addr + iph_off);
rte_memcpy(&packet_id, &iphe4->packet_id, sizeof(uint16_t));
packet_id = rte_be_to_cpu_16(packet_id);
break;
}
case PKT_TX_IPV6:
packet_id = 0;
break;
default:
return EINVAL;
}
th = (const struct tcp_hdr *)(hdr_addr + tcph_off);
@ -1014,6 +1049,7 @@ struct sfc_dp_tx sfc_ef10_tx = {
.qstop = sfc_ef10_tx_qstop,
.qreap = sfc_ef10_tx_qreap,
.qdesc_status = sfc_ef10_tx_qdesc_status,
.pkt_prepare = sfc_ef10_prepare_pkts,
.pkt_burst = sfc_ef10_xmit_pkts,
};