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lib/nvmf: Do one memset per new PDU recv

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While waiting for a new PDU, target will not do too many useless
memcpy.

Signed-off-by: MengjinWu <mengjin.wu@intel.com>
Change-Id: Ie0825c2b1e44444b210040c4a1761010e0e4cfe5
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/14444
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
This commit is contained in:
MengjinWu 2022-09-10 05:46:51 +00:00 committed by Tomasz Zawadzki
parent 6045458cb6
commit 12807c5bc6
1 changed files with 1 additions and 3 deletions
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4
lib/nvmf/tcp.c
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@ -2140,6 +2140,7 @@ nvmf_tcp_sock_process(struct spdk_nvmf_tcp_qpair *tqpair)
tqpair->pdu_in_progress = pdu;
}
memset(pdu, 0, offsetof(struct nvme_tcp_pdu, qpair));
nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_CH);
/* FALLTHROUGH */
case NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_CH:
if (spdk_unlikely(tqpair->state == NVME_TCP_QPAIR_STATE_INITIALIZING)) {
@ -2155,9 +2156,6 @@ nvmf_tcp_sock_process(struct spdk_nvmf_tcp_qpair *tqpair)
} else if (rc > 0) {
pdu->ch_valid_bytes += rc;
spdk_trace_record(TRACE_TCP_READ_FROM_SOCKET_DONE, tqpair->qpair.qid, rc, 0, tqpair);
if (spdk_likely(tqpair->recv_state == NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_READY)) {
nvmf_tcp_qpair_set_recv_state(tqpair, NVME_TCP_PDU_RECV_STATE_AWAIT_PDU_CH);
}
}
if (pdu->ch_valid_bytes < sizeof(struct spdk_nvme_tcp_common_pdu_hdr)) {