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RDMA/rxe: Fix mismatched max_msg_sz 

User mode queries max_msg_sz as 0x800000 by command 'ibv_devinfo -v',
however ibv_post_send/ibv_post_recv has a limit of 2^31. Fix this
mismatched information.

Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Fixes: f605f26ea1 ("RDMA/rxe: Protect QP state with qp->state_lock")
Fixes: 5bf944f241 ("RDMA/rxe: Add error messages")
Link: https://patch.msgid.link/20241216121953.765331-1-pizhenwei@bytedance.com
Review-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
pull/1134/head
zhenwei pi 2024-12-16 20:19:53 +08:00 committed by Leon Romanovsky
parent 2dab32d1c7
commit db03b70969
2 changed files with 3 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/infiniband/sw/rxe/rxe_param.h
View File

@ -129,7 +129,7 @@ enum rxe_device_param {
enum rxe_port_param {
RXE_PORT_GID_TBL_LEN = 1024,
RXE_PORT_PORT_CAP_FLAGS = IB_PORT_CM_SUP,
RXE_PORT_MAX_MSG_SZ = 0x800000,
RXE_PORT_MAX_MSG_SZ = (1UL << 31),
RXE_PORT_BAD_PKEY_CNTR = 0,
RXE_PORT_QKEY_VIOL_CNTR = 0,
RXE_PORT_LID = 0,

5
drivers/infiniband/sw/rxe/rxe_verbs.c
View File

@ -688,7 +688,7 @@ static int validate_send_wr(struct rxe_qp *qp, const struct ib_send_wr *ibwr,
for (i = 0; i < ibwr->num_sge; i++)
length += ibwr->sg_list[i].length;
if (length > (1UL << 31)) {
if (length > RXE_PORT_MAX_MSG_SZ) {
rxe_err_qp(qp, "message length too long\n");
break;
}
@ -972,8 +972,7 @@ static int post_one_recv(struct rxe_rq *rq, const struct ib_recv_wr *ibwr)
for (i = 0; i < num_sge; i++)
length += ibwr->sg_list[i].length;
/* IBA max message size is 2^31 */
if (length >= (1UL<<31)) {
if (length > RXE_PORT_MAX_MSG_SZ) {
err = -EINVAL;
rxe_dbg("message length too long\n");
goto err_out;