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-rw-r--r--freebsd/sys/net/if.c123
1 files changed, 109 insertions, 14 deletions
diff --git a/freebsd/sys/net/if.c b/freebsd/sys/net/if.c
index 0bd72e44..f227ed9f 100644
--- a/freebsd/sys/net/if.c
+++ b/freebsd/sys/net/if.c
@@ -160,6 +160,7 @@ static int ifconf(u_long, caddr_t);
static void if_freemulti(struct ifmultiaddr *);
static void if_init(void *);
static void if_grow(void);
+static void if_input_default(struct ifnet *, struct mbuf *);
static void if_route(struct ifnet *, int flag, int fam);
static int if_setflag(struct ifnet *, int, int, int *, int);
static int if_transmit(struct ifnet *ifp, struct mbuf *m);
@@ -601,6 +602,57 @@ if_attach(struct ifnet *ifp)
if_attach_internal(ifp, 0);
}
+/*
+ * Compute the least common TSO limit.
+ */
+void
+if_hw_tsomax_common(struct ifnet *ifp, struct ifnet_hw_tsomax *pmax)
+{
+ /*
+ * 1) If there is no limit currently, take the limit from
+ * the network adapter.
+ *
+ * 2) If the network adapter has a limit below the current
+ * limit, apply it.
+ */
+ if (pmax->tsomaxbytes == 0 || (ifp->if_hw_tsomax != 0 &&
+ ifp->if_hw_tsomax < pmax->tsomaxbytes)) {
+ pmax->tsomaxbytes = ifp->if_hw_tsomax;
+ }
+ if (pmax->tsomaxsegcount == 0 || (ifp->if_hw_tsomaxsegcount != 0 &&
+ ifp->if_hw_tsomaxsegcount < pmax->tsomaxsegcount)) {
+ pmax->tsomaxsegcount = ifp->if_hw_tsomaxsegcount;
+ }
+ if (pmax->tsomaxsegsize == 0 || (ifp->if_hw_tsomaxsegsize != 0 &&
+ ifp->if_hw_tsomaxsegsize < pmax->tsomaxsegsize)) {
+ pmax->tsomaxsegsize = ifp->if_hw_tsomaxsegsize;
+ }
+}
+
+/*
+ * Update TSO limit of a network adapter.
+ *
+ * Returns zero if no change. Else non-zero.
+ */
+int
+if_hw_tsomax_update(struct ifnet *ifp, struct ifnet_hw_tsomax *pmax)
+{
+ int retval = 0;
+ if (ifp->if_hw_tsomax != pmax->tsomaxbytes) {
+ ifp->if_hw_tsomax = pmax->tsomaxbytes;
+ retval++;
+ }
+ if (ifp->if_hw_tsomaxsegsize != pmax->tsomaxsegsize) {
+ ifp->if_hw_tsomaxsegsize = pmax->tsomaxsegsize;
+ retval++;
+ }
+ if (ifp->if_hw_tsomaxsegcount != pmax->tsomaxsegcount) {
+ ifp->if_hw_tsomaxsegcount = pmax->tsomaxsegcount;
+ retval++;
+ }
+ return (retval);
+}
+
static void
if_attach_internal(struct ifnet *ifp, int vmove)
{
@@ -632,7 +684,9 @@ if_attach_internal(struct ifnet *ifp, int vmove)
ifp->if_transmit = if_transmit;
ifp->if_qflush = if_qflush;
}
-
+ if (ifp->if_input == NULL)
+ ifp->if_input = if_input_default;
+
if (!vmove) {
#ifdef MAC
mac_ifnet_create(ifp);
@@ -675,13 +729,29 @@ if_attach_internal(struct ifnet *ifp, int vmove)
ifp->if_broadcastaddr = NULL;
#if defined(INET) || defined(INET6)
- /* Initialize to max value. */
- if (ifp->if_hw_tsomax == 0)
- ifp->if_hw_tsomax = min(IP_MAXPACKET, 32 * MCLBYTES -
+ /* Use defaults for TSO, if nothing is set */
+ if (ifp->if_hw_tsomax == 0 &&
+ ifp->if_hw_tsomaxsegcount == 0 &&
+ ifp->if_hw_tsomaxsegsize == 0) {
+ /*
+ * The TSO defaults needs to be such that an
+ * NFS mbuf list of 35 mbufs totalling just
+ * below 64K works and that a chain of mbufs
+ * can be defragged into at most 32 segments:
+ */
+ ifp->if_hw_tsomax = min(IP_MAXPACKET, (32 * MCLBYTES) -
(ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN));
- KASSERT(ifp->if_hw_tsomax <= IP_MAXPACKET &&
- ifp->if_hw_tsomax >= IP_MAXPACKET / 8,
- ("%s: tsomax outside of range", __func__));
+ ifp->if_hw_tsomaxsegcount = 35;
+ ifp->if_hw_tsomaxsegsize = 2048; /* 2K */
+
+ /* XXX some drivers set IFCAP_TSO after ethernet attach */
+ if (ifp->if_capabilities & IFCAP_TSO) {
+ if_printf(ifp, "Using defaults for TSO: %u/%u/%u\n",
+ ifp->if_hw_tsomax,
+ ifp->if_hw_tsomaxsegcount,
+ ifp->if_hw_tsomaxsegsize);
+ }
+ }
#endif
}
#ifdef VIMAGE
@@ -1481,7 +1551,7 @@ ifa_add_loopback_route(struct ifaddr *ifa, struct sockaddr *ia)
info.rti_flags = ifa->ifa_flags | RTF_HOST | RTF_STATIC;
info.rti_info[RTAX_DST] = ia;
info.rti_info[RTAX_GATEWAY] = (struct sockaddr *)&null_sdl;
- error = rtrequest1_fib(RTM_ADD, &info, &rt, 0);
+ error = rtrequest1_fib(RTM_ADD, &info, &rt, ifa->ifa_ifp->if_fib);
if (error == 0 && rt != NULL) {
RT_LOCK(rt);
@@ -1513,7 +1583,7 @@ ifa_del_loopback_route(struct ifaddr *ifa, struct sockaddr *ia)
info.rti_flags = ifa->ifa_flags | RTF_HOST | RTF_STATIC;
info.rti_info[RTAX_DST] = ia;
info.rti_info[RTAX_GATEWAY] = (struct sockaddr *)&null_sdl;
- error = rtrequest1_fib(RTM_DELETE, &info, NULL, 0);
+ error = rtrequest1_fib(RTM_DELETE, &info, NULL, ifa->ifa_ifp->if_fib);
if (error != 0)
log(LOG_INFO, "ifa_del_loopback_route: deletion failed\n");
@@ -1630,7 +1700,7 @@ done:
*/
/*ARGSUSED*/
struct ifaddr *
-ifa_ifwithdstaddr(struct sockaddr *addr)
+ifa_ifwithdstaddr_fib(struct sockaddr *addr, int fibnum)
{
struct ifnet *ifp;
struct ifaddr *ifa;
@@ -1639,6 +1709,8 @@ ifa_ifwithdstaddr(struct sockaddr *addr)
TAILQ_FOREACH(ifp, &V_ifnet, if_link) {
if ((ifp->if_flags & IFF_POINTOPOINT) == 0)
continue;
+ if ((fibnum != RT_ALL_FIBS) && (ifp->if_fib != fibnum))
+ continue;
IF_ADDR_RLOCK(ifp);
TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
if (ifa->ifa_addr->sa_family != addr->sa_family)
@@ -1658,12 +1730,19 @@ done:
return (ifa);
}
+struct ifaddr *
+ifa_ifwithdstaddr(struct sockaddr *addr)
+{
+
+ return (ifa_ifwithdstaddr_fib(addr, RT_ALL_FIBS));
+}
+
/*
* Find an interface on a specific network. If many, choice
* is most specific found.
*/
struct ifaddr *
-ifa_ifwithnet(struct sockaddr *addr, int ignore_ptp)
+ifa_ifwithnet_fib(struct sockaddr *addr, int ignore_ptp, int fibnum)
{
struct ifnet *ifp;
struct ifaddr *ifa;
@@ -1683,12 +1762,14 @@ ifa_ifwithnet(struct sockaddr *addr, int ignore_ptp)
/*
* Scan though each interface, looking for ones that have addresses
- * in this address family. Maintain a reference on ifa_maybe once
- * we find one, as we release the IF_ADDR_RLOCK() that kept it stable
- * when we move onto the next interface.
+ * in this address family and the requested fib. Maintain a reference
+ * on ifa_maybe once we find one, as we release the IF_ADDR_RLOCK() that
+ * kept it stable when we move onto the next interface.
*/
IFNET_RLOCK_NOSLEEP();
TAILQ_FOREACH(ifp, &V_ifnet, if_link) {
+ if ((fibnum != RT_ALL_FIBS) && (ifp->if_fib != fibnum))
+ continue;
IF_ADDR_RLOCK(ifp);
TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
char *cp, *cp2, *cp3;
@@ -1770,6 +1851,13 @@ done:
return (ifa);
}
+struct ifaddr *
+ifa_ifwithnet(struct sockaddr *addr, int ignore_ptp)
+{
+
+ return (ifa_ifwithnet_fib(addr, ignore_ptp, RT_ALL_FIBS));
+}
+
/*
* Find an interface address specific to an interface best matching
* a given address.
@@ -3398,6 +3486,13 @@ if_transmit(struct ifnet *ifp, struct mbuf *m)
return (error);
}
+static void
+if_input_default(struct ifnet *ifp __unused, struct mbuf *m)
+{
+
+ m_freem(m);
+}
+
int
if_handoff(struct ifqueue *ifq, struct mbuf *m, struct ifnet *ifp, int adjust)
{
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-04 05:29:55 +0000