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RDMA/bnxt_re: Fix max SGEs for the Work Request

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BugLink: https://bugs.launchpad.net/bugs/2106632

commit 79d330fbdffd8cee06d8bdf38d82cb62d8363a27 upstream.

Gen P7 supports up to 13 SGEs for now. WQE software structure
can hold only 6 now. Since the max send sge is reported as
13, the stack can give requests up to 13 SGEs. This is causing
traffic failures and system crashes.

Use the define for max SGE supported for variable size. This
will work for both static and variable WQEs.

Fixes: 227f51743b61 ("RDMA/bnxt_re: Fix the max WQE size for static WQE support")
Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Link: https://patch.msgid.link/20241204075416.478431-2-kalesh-anakkur.purayil@broadcom.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Mehmet Basaran <mehmet.basaran@canonical.com>
This commit is contained in:
Kashyap Desai
2024-12-04 13:24:12 +05:30
committed by Mehmet Basaran
parent c3ed67f8da
commit 1f6d31ac92
1 changed files with 1 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/infiniband/hw/bnxt_re/qplib_fp.h
+1 -2
View File
@@ -114,7 +114,6 @@ struct bnxt_qplib_sge {
u32 size;
};
#define BNXT_QPLIB_QP_MAX_SGL 6
struct bnxt_qplib_swq {
u64 wr_id;
int next_idx;
@@ -154,7 +153,7 @@ struct bnxt_qplib_swqe {
#define BNXT_QPLIB_SWQE_FLAGS_UC_FENCE BIT(2)
#define BNXT_QPLIB_SWQE_FLAGS_SOLICIT_EVENT BIT(3)
#define BNXT_QPLIB_SWQE_FLAGS_INLINE BIT(4)
struct bnxt_qplib_sge sg_list[BNXT_QPLIB_QP_MAX_SGL];
struct bnxt_qplib_sge sg_list[BNXT_VAR_MAX_SGE];
int num_sge;
/* Max inline data is 96 bytes */
u32 inline_len;