diff options
Diffstat (limited to 'drivers/net/bonding/bond_alb.h')
| -rw-r--r-- | drivers/net/bonding/bond_alb.h | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/drivers/net/bonding/bond_alb.h b/drivers/net/bonding/bond_alb.h index 90f140a2d197..e7a5b8b37ea3 100644 --- a/drivers/net/bonding/bond_alb.h +++ b/drivers/net/bonding/bond_alb.h @@ -94,15 +94,35 @@ struct tlb_client_info { /* ------------------------------------------------------------------------- * struct rlb_client_info contains all info related to a specific rx client - * connection. This is the Clients Hash Table entry struct + * connection. This is the Clients Hash Table entry struct. + * Note that this is not a proper hash table; if a new client's IP address + * hash collides with an existing client entry, the old entry is replaced. + * + * There is a linked list (linked by the used_next and used_prev members) + * linking all the used entries of the hash table. This allows updating + * all the clients without walking over all the unused elements of the table. + * + * There are also linked lists of entries with identical hash(ip_src). These + * allow cleaning up the table from ip_src<->mac_src associations that have + * become outdated and would cause sending out invalid ARP updates to the + * network. These are linked by the (src_next and src_prev members). * ------------------------------------------------------------------------- */ struct rlb_client_info { __be32 ip_src; /* the server IP address */ __be32 ip_dst; /* the client IP address */ + u8 mac_src[ETH_ALEN]; /* the server MAC address */ u8 mac_dst[ETH_ALEN]; /* the client MAC address */ - u32 next; /* The next Hash table entry index */ - u32 prev; /* The previous Hash table entry index */ + + /* list of used hash table entries, starting at rx_hashtbl_used_head */ + u32 used_next; + u32 used_prev; + + /* ip_src based hashing */ + u32 src_next; /* next entry with same hash(ip_src) */ + u32 src_prev; /* prev entry with same hash(ip_src) */ + u32 src_first; /* first entry with hash(ip_src) == this entry's index */ + u8 assigned; /* checking whether this entry is assigned */ u8 ntt; /* flag - need to transmit client info */ struct slave *slave; /* the slave assigned to this client */ @@ -131,7 +151,7 @@ struct alb_bond_info { int rlb_enabled; struct rlb_client_info *rx_hashtbl; /* Receive hash table */ spinlock_t rx_hashtbl_lock; - u32 rx_hashtbl_head; + u32 rx_hashtbl_used_head; u8 rx_ntt; /* flag - need to transmit * to all rx clients */ |