packet: rollover prepare: per-socket state
Replace rollover state per fanout group with state per socket. Future
patches will add fields to the new structure.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/packet/internal.h b/net/packet/internal.h
index fe6e20c..a9d33a2 100644
--- a/net/packet/internal.h
+++ b/net/packet/internal.h
@@ -82,12 +82,15 @@
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;
+} ____cacheline_aligned_in_smp;
+
struct packet_sock {
/* struct sock has to be the first member of packet_sock */
struct sock sk;
@@ -104,6 +107,7 @@
has_vnet_hdr:1;
int ifindex; /* bound device */
__be16 num;
+ struct packet_rollover *rollover;
struct packet_mclist *mclist;
atomic_t mapped;
enum tpacket_versions tp_version;