packet: rollover huge flows before small flows

[cascardo/linux.git] / net / packet / internal.h

diff --git a/net/packet/internal.h b/net/packet/internal.h
index fe6e20c..a9d30a1 100644 (file)
--- a/net/packet/internal.h
+++ b/net/packet/internal.h
@@ -82,12 +82,17 @@ struct packet_fanout {
        atomic_t                rr_cur;
        struct list_head        list;
        struct sock             *arr[PACKET_FANOUT_MAX];
-       int                     next[PACKET_FANOUT_MAX];
        spinlock_t              lock;
        atomic_t                sk_ref;
        struct packet_type      prot_hook ____cacheline_aligned_in_smp;
 };
 
+struct packet_rollover {
+       int                     sock;
+#define ROLLOVER_HLEN  (L1_CACHE_BYTES / sizeof(u32))
+       u32                     history[ROLLOVER_HLEN] ____cacheline_aligned;
+} ____cacheline_aligned_in_smp;
+
 struct packet_sock {
        /* struct sock has to be the first member of packet_sock */
        struct sock             sk;
@@ -102,8 +107,10 @@ struct packet_sock {
                                auxdata:1,
                                origdev:1,
                                has_vnet_hdr:1;
+       int                     pressure;
        int                     ifindex;        /* bound device         */
        __be16                  num;
+       struct packet_rollover  *rollover;
        struct packet_mclist    *mclist;
        atomic_t                mapped;
        enum tpacket_versions   tp_version;