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posix: update sendmsg_idx only if zerocopy is enabled

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Sendmsg_idx is used in _sock_check_zcopy to check whether idx in
MSG_ERRQUEUE and req's idx match. There is no need to update
it if zerocopy is disabled.

Change-Id: I24bb367e0bff006782d9052470857f6e4db90681
Signed-off-by: Richael Zhuang <richael.zhuang@arm.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12104
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
This commit is contained in:
Richael Zhuang 2022-03-31 15:06:01 +08:00 committed by Tomasz Zawadzki
parent 5fd1f68b63
commit 449cab9569
1 changed files with 8 additions and 6 deletions
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14
module/sock/posix/posix.c
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@ -744,12 +744,14 @@ _sock_flush(struct spdk_sock *sock)
return rc;
}
/* Handling overflow case, because we use psock->sendmsg_idx - 1 for the
* req->internal.offset, so sendmsg_idx should not be zero */
if (spdk_unlikely(psock->sendmsg_idx == UINT32_MAX)) {
psock->sendmsg_idx = 1;
} else {
psock->sendmsg_idx++;
if (psock->zcopy) {
/* Handling overflow case, because we use psock->sendmsg_idx - 1 for the
* req->internal.offset, so sendmsg_idx should not be zero */
if (spdk_unlikely(psock->sendmsg_idx == UINT32_MAX)) {
psock->sendmsg_idx = 1;
} else {
psock->sendmsg_idx++;
}
}
/* Consume the requests that were actually written */