diff options
| author | Karsten Graul <kgraul@linux.ibm.com> | 2020-10-31 19:19:38 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2020-10-31 15:44:13 -0700 |
| commit | 3752404a68e86d82b97a61aba78f6d6afae48549 (patch) | |
| tree | 6b73ef2ea707b1d3a8ab572b04a7d1570d46c6fd /net/smc/smc_clc.h | |
| parent | cfb2cffafa2aa2f5bccb382138157866c6e767ce (diff) | |
net/smc: improve return codes for SMC-Dv2
To allow better problem diagnosis the return codes for SMC-Dv2 are
improved by this patch. A few more CLC DECLINE codes are defined and
sent to the peer when an SMC connection cannot be established.
There are now multiple SMC variations that are offered by the client and
the server may encounter problems to initialize all of them.
Because only one diagnosis code can be sent to the client the decision
was made to send the first code that was encountered. Because the server
tries the variations in the order of importance (SMC-Dv2, SMC-D, SMC-R)
this makes sure that the diagnosis code of the most important variation
is sent.
v2: initialize rc in smc_listen_v2_check().
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Link: https://lore.kernel.org/r/20201031181938.69903-1-kgraul@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/smc/smc_clc.h')
| -rw-r--r-- | net/smc/smc_clc.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/net/smc/smc_clc.h b/net/smc/smc_clc.h index b3f46ab79e47..e7ab05683bc9 100644 --- a/net/smc/smc_clc.h +++ b/net/smc/smc_clc.h @@ -37,6 +37,11 @@ #define SMC_CLC_DECL_NOSMCDEV 0x03030000 /* no SMC device found (R or D) */ #define SMC_CLC_DECL_NOSMCDDEV 0x03030001 /* no SMC-D device found */ #define SMC_CLC_DECL_NOSMCRDEV 0x03030002 /* no SMC-R device found */ +#define SMC_CLC_DECL_NOISM2SUPP 0x03030003 /* hardware has no ISMv2 support */ +#define SMC_CLC_DECL_NOV2EXT 0x03030004 /* peer sent no clc v2 extension */ +#define SMC_CLC_DECL_NOV2DEXT 0x03030005 /* peer sent no clc SMC-Dv2 ext. */ +#define SMC_CLC_DECL_NOSEID 0x03030006 /* peer sent no SEID */ +#define SMC_CLC_DECL_NOSMCD2DEV 0x03030007 /* no SMC-Dv2 device found */ #define SMC_CLC_DECL_MODEUNSUPP 0x03040000 /* smc modes do not match (R or D)*/ #define SMC_CLC_DECL_RMBE_EC 0x03050000 /* peer has eyecatcher in RMBE */ #define SMC_CLC_DECL_OPTUNSUPP 0x03060000 /* fastopen sockopt not supported */ |