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authorD. Wythe <alibuda@linux.alibaba.com>2022-02-10 17:11:38 +0800
committerDavid S. Miller <davem@davemloft.net>2022-02-11 11:14:58 +0000
commitf9496b7c1b48ce02cd17a3ee88b1e049c689a222 (patch)
tree3d90bd3ecb81a8a37387bc31fbcbf6e064142ebf /include/uapi/linux/smc.h
parenta6a6fe27bab48f0d09a64b051e7bde432fcae081 (diff)
net/smc: Add global configure for handshake limitation by netlink
Although we can control SMC handshake limitation through socket options, which means that applications who need it must modify their code. It's quite troublesome for many existing applications. This patch modifies the global default value of SMC handshake limitation through netlink, providing a way to put constraint on handshake without modifies any code for applications. Suggested-by: Tony Lu <tonylu@linux.alibaba.com> Signed-off-by: D. Wythe <alibuda@linux.alibaba.com> Reviewed-by: Tony Lu <tonylu@linux.alibaba.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi/linux/smc.h')
-rw-r--r--include/uapi/linux/smc.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/uapi/linux/smc.h b/include/uapi/linux/smc.h
index 343e7450c3a3..693f549f6966 100644
--- a/include/uapi/linux/smc.h
+++ b/include/uapi/linux/smc.h
@@ -59,6 +59,9 @@ enum {
SMC_NETLINK_DUMP_SEID,
SMC_NETLINK_ENABLE_SEID,
SMC_NETLINK_DISABLE_SEID,
+ SMC_NETLINK_DUMP_HS_LIMITATION,
+ SMC_NETLINK_ENABLE_HS_LIMITATION,
+ SMC_NETLINK_DISABLE_HS_LIMITATION,
};
/* SMC_GENL_FAMILY top level attributes */
@@ -285,6 +288,14 @@ enum {
SMC_NLA_SEID_TABLE_MAX = __SMC_NLA_SEID_TABLE_MAX - 1
};
+/* SMC_NETLINK_HS_LIMITATION attributes */
+enum {
+ SMC_NLA_HS_LIMITATION_UNSPEC,
+ SMC_NLA_HS_LIMITATION_ENABLED, /* u8 */
+ __SMC_NLA_HS_LIMITATION_MAX,
+ SMC_NLA_HS_LIMITATION_MAX = __SMC_NLA_HS_LIMITATION_MAX - 1
+};
+
/* SMC socket options */
#define SMC_LIMIT_HS 1 /* constraint on smc handshake */