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| author | Octavian Purdila <opurdila@ixiacom.com> | 2009-12-26 12:51:04 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-12-27 05:43:57 +0100 |
| commit | 6d2e3ea284463d5ab34e9cf2a41d0b8627b95d02 (patch) | |
| tree | 86ee780b06adfe388ac64dd66ece598be69b29ec /include/net/llc.h | |
| parent | llc: optimize multicast delivery (diff) | |
| download | linux-6d2e3ea284463d5ab34e9cf2a41d0b8627b95d02.tar.xz linux-6d2e3ea284463d5ab34e9cf2a41d0b8627b95d02.zip | |
llc: use a device based hash table to speed up multicast delivery
This patch adds a per SAP device based hash table to solve the
multicast delivery scalability issue when we have large number of
interfaces and a large number of sockets bound to the same SAP.
Signed-off-by: Octavian Purdila <opurdila@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/llc.h')
| -rw-r--r-- | include/net/llc.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/net/llc.h b/include/net/llc.h index 1559cf10e874..dbef5917905b 100644 --- a/include/net/llc.h +++ b/include/net/llc.h @@ -32,6 +32,9 @@ struct llc_addr { #define LLC_SAP_STATE_INACTIVE 1 #define LLC_SAP_STATE_ACTIVE 2 +#define LLC_SK_DEV_HASH_BITS 6 +#define LLC_SK_DEV_HASH_ENTRIES (1<<LLC_SK_DEV_HASH_BITS) + /** * struct llc_sap - Defines the SAP component * @@ -56,8 +59,16 @@ struct llc_sap { struct list_head node; spinlock_t sk_lock; struct hlist_nulls_head sk_list; + struct hlist_head sk_dev_hash[LLC_SK_DEV_HASH_ENTRIES]; }; +static inline +struct hlist_head *llc_sk_dev_hash(struct llc_sap *sap, int ifindex) +{ + return &sap->sk_dev_hash[ifindex % LLC_SK_DEV_HASH_ENTRIES]; +} + + #define LLC_DEST_INVALID 0 /* Invalid LLC PDU type */ #define LLC_DEST_SAP 1 /* Type 1 goes here */ #define LLC_DEST_CONN 2 /* Type 2 goes here */ |