netisr: Add hashcheck method to check and adjust hw provided hash

[dragonfly.git] / sys / net / netisr.c

diff --git a/sys/net/netisr.c b/sys/net/netisr.c
index 8dbbcf1..5253bf4 100644 (file)
--- a/sys/net/netisr.c
+++ b/sys/net/netisr.c
@@ -60,6 +60,7 @@
 static void netmsg_sync_func(netmsg_t msg);
 static void netmsg_service_loop(void *arg);
 static void cpu0_cpufn(struct mbuf **mp, int hoff);
+static void netisr_nohashck(struct mbuf *, const struct pktinfo *);
 
 struct netmsg_port_registration {
        TAILQ_ENTRY(netmsg_port_registration) npr_entry;
@@ -443,10 +444,23 @@ netisr_register(int num, netisr_fn_t handler, netisr_cpufn_t cpufn)
        ni = &netisrs[num];
 
        ni->ni_handler = handler;
+       ni->ni_hashck = netisr_nohashck;
        ni->ni_cpufn = cpufn;
        netmsg_init(&ni->ni_netmsg, NULL, &netisr_adone_rport, 0, NULL);
 }
 
+void
+netisr_register_hashcheck(int num, netisr_hashck_t hashck)
+{
+       struct netisr *ni;
+
+       KASSERT((num > 0 && num <= NELEM(netisrs)),
+               ("netisr_register: bad isr %d", num));
+
+       ni = &netisrs[num];
+       ni->ni_hashck = hashck;
+}
+
 void
 netisr_register_rollup(netisr_ru_t ru_func)
 {
@@ -663,3 +677,27 @@ netisr_barrier_rem(struct netisr_barrier *br)
 #endif
        br->br_isset = 0;
 }
+
+static void
+netisr_nohashck(struct mbuf *m, const struct pktinfo *pi __unused)
+{
+       m->m_flags &= ~M_HASH;
+}
+
+void
+netisr_hashcheck(int num, struct mbuf *m, const struct pktinfo *pi)
+{
+       struct netisr *ni;
+
+       if (num < 0 || num >= NETISR_MAX)
+               panic("Bad isr %d", num);
+
+       /*
+        * Valid netisr?
+        */
+       ni = &netisrs[num];
+       if (ni->ni_handler == NULL)
+               panic("Unregistered isr %d\n", num);
+
+       ni->ni_hashck(m, pi);
+}