diff options
Diffstat (limited to 'debian/patches/libdde_rx_queue.patch')
| -rw-r--r-- | debian/patches/libdde_rx_queue.patch | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/debian/patches/libdde_rx_queue.patch b/debian/patches/libdde_rx_queue.patch new file mode 100644 index 00000000..0d962647 --- /dev/null +++ b/debian/patches/libdde_rx_queue.patch @@ -0,0 +1,70 @@ +commit d5a9e24afb4ab38110ebb777588ea0bd0eacbd0a +Author: David S. Miller <davem@davemloft.net> +Date: Tue Jan 27 16:22:11 2009 -0800 + + net: Allow RX queue selection to seed TX queue hashing. + + The idea is that drivers which implement multiqueue RX + pre-seed the SKB by recording the RX queue selected by + the hardware. + + If such a seed is found on TX, we'll use that to select + the outgoing TX queue. + + This helps get more consistent load balancing on router + and firewall loads. + + Signed-off-by: David S. Miller <davem@davemloft.net> + +Index: hurd-debian/libdde_linux26/contrib/include/linux/skbuff.h +=================================================================== +--- hurd-debian.orig/libdde_linux26/contrib/include/linux/skbuff.h 2012-04-16 00:34:56.000000000 +0000 ++++ hurd-debian/libdde_linux26/contrib/include/linux/skbuff.h 2012-04-16 00:35:11.000000000 +0000 +@@ -1903,6 +1903,21 @@ + to->queue_mapping = from->queue_mapping; + } + ++static inline void skb_record_rx_queue(struct sk_buff *skb, u16 rx_queue) ++{ ++ skb->queue_mapping = rx_queue + 1; ++} ++ ++static inline u16 skb_get_rx_queue(struct sk_buff *skb) ++{ ++ return skb->queue_mapping - 1; ++} ++ ++static inline bool skb_rx_queue_recorded(struct sk_buff *skb) ++{ ++ return (skb->queue_mapping != 0); ++} ++ + #ifdef CONFIG_XFRM + static inline struct sec_path *skb_sec_path(struct sk_buff *skb) + { +Index: hurd-debian/libdde_linux26/lib/src/net/core/dev.c +=================================================================== +--- hurd-debian.orig/libdde_linux26/lib/src/net/core/dev.c 2012-04-16 00:34:51.000000000 +0000 ++++ hurd-debian/libdde_linux26/lib/src/net/core/dev.c 2012-04-16 00:35:11.000000000 +0000 +@@ -1731,6 +1731,13 @@ + simple_tx_hashrnd_initialized = 1; + } + ++ if (skb_rx_queue_recorded(skb)) { ++ u32 val = skb_get_rx_queue(skb); ++ ++ hash = jhash_1word(val, simple_tx_hashrnd); ++ goto out; ++ } ++ + switch (skb->protocol) { + case htons(ETH_P_IP): + if (!(ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET))) +@@ -1768,6 +1775,7 @@ + + hash = jhash_3words(addr1, addr2, ports, simple_tx_hashrnd); + ++out: + return (u16) (((u64) hash * dev->real_num_tx_queues) >> 32); + } + |