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smb: smbdirect: introduce smbdirect_connection_post_recv_io()

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This is basically a copy of smbd_post_recv() in the client and
smb_direct_post_recv() in the server.

The only difference is that this returns early if the connection
is already broken.

Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Stefan Metzmacher 2025-09-17 09:13:25 +02:00 committed by Steve French
parent 6073eb3e31
commit dd1960ab38
1 changed files with 42 additions and 0 deletions
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42
fs/smb/common/smbdirect/smbdirect_connection.c
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@ -652,6 +652,48 @@ static void smbdirect_connection_send_io_done(struct ib_cq *cq, struct ib_wc *wc
wake_up(&sc->send_io.pending.dec_wait_queue);
}
__maybe_unused /* this is temporary while this file is included in others */
static int smbdirect_connection_post_recv_io(struct smbdirect_recv_io *msg)
{
struct smbdirect_socket *sc = msg->socket;
const struct smbdirect_socket_parameters *sp = &sc->parameters;
struct ib_recv_wr recv_wr = {
.wr_cqe = &msg->cqe,
.sg_list = &msg->sge,
.num_sge = 1,
};
int ret;
if (unlikely(sc->first_error))
return sc->first_error;
msg->sge.addr = ib_dma_map_single(sc->ib.dev,
msg->packet,
sp->max_recv_size,
DMA_FROM_DEVICE);
ret = ib_dma_mapping_error(sc->ib.dev, msg->sge.addr);
if (ret)
return ret;
msg->sge.length = sp->max_recv_size;
msg->sge.lkey = sc->ib.pd->local_dma_lkey;
ret = ib_post_recv(sc->ib.qp, &recv_wr, NULL);
if (ret) {
smbdirect_log_rdma_recv(sc, SMBDIRECT_LOG_ERR,
"ib_post_recv failed ret=%d (%1pe)\n",
ret, SMBDIRECT_DEBUG_ERR_PTR(ret));
ib_dma_unmap_single(sc->ib.dev,
msg->sge.addr,
msg->sge.length,
DMA_FROM_DEVICE);
msg->sge.length = 0;
smbdirect_socket_schedule_cleanup(sc, ret);
}
return ret;
}
static bool smbdirect_map_sges_single_page(struct smbdirect_map_sges *state,
struct page *page, size_t off, size_t len)
{