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Code Issues Releases Activity

- Fix multicast operation that I broke in previous commit.

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- Do not enable multicast hash lookup if no multicast addresses
  were configured or if promisc mode is enabled.
This commit is contained in:
Stanislav Sedov 2009-05-10 10:32:29 +00:00
parent 36ffa1b9de
commit 5c04df6cb6
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=191960
1 changed files with 44 additions and 16 deletions
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60
sys/arm/at91/if_ate.c
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@ -80,6 +80,7 @@ __FBSDID("$FreeBSD$");
* Driver-specific flags.
*/
#define ATE_FLAG_DETACHING 0x01
#define ATE_FLAG_MULTICAST 0x02
struct ate_softc
{
@ -316,26 +317,39 @@ ate_load_rx_buf(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
* of different MAC chips use this method (or the reverse the bits)
* method.
*/
static void
static int
ate_setmcast(struct ate_softc *sc)
{
uint32_t index;
uint32_t mcaf[2];
u_char *af = (u_char *) mcaf;
struct ifmultiaddr *ifma;
struct ifnet *ifp;
ifp = sc->ifp;
if ((ifp->if_flags & IFF_PROMISC) != 0)
return (0);
if ((ifp->if_flags & IFF_ALLMULTI) != 0) {
WR4(sc, ETH_HSL, 0xffffffff);
WR4(sc, ETH_HSH, 0xffffffff);
return (1);
}
/*
* Compute the multicast hash.
*/
mcaf[0] = 0;
mcaf[1] = 0;
IF_ADDR_LOCK(sc->ifp);
TAILQ_FOREACH(ifma, &sc->ifp->if_multiaddrs, ifma_link) {
IF_ADDR_LOCK(ifp);
TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
index = ether_crc32_be(LLADDR((struct sockaddr_dl *)
ifma->ifma_addr), ETHER_ADDR_LEN) >> 26;
af[index >> 3] |= 1 << (index & 7);
}
IF_ADDR_UNLOCK(sc->ifp);
IF_ADDR_UNLOCK(ifp);
/*
* Write the hash to the hash register. This card can also
@ -346,6 +360,7 @@ ate_setmcast(struct ate_softc *sc)
*/
WR4(sc, ETH_HSL, mcaf[0]);
WR4(sc, ETH_HSH, mcaf[1]);
return (mcaf[0] || mcaf[1]);
}
static int
@ -772,6 +787,11 @@ ateinit_locked(void *xsc)
else
WR4(sc, ETH_CFG, RD4(sc, ETH_CFG) & ~ETH_CFG_RMII);
ate_rxfilter(sc);
/*
* Turn on MACs and interrupt processing.
*/
WR4(sc, ETH_CTL, RD4(sc, ETH_CTL) | ETH_CTL_TE | ETH_CTL_RE);
WR4(sc, ETH_IER, ETH_ISR_RCOM | ETH_ISR_TCOM | ETH_ISR_RBNA);
@ -781,8 +801,6 @@ ateinit_locked(void *xsc)
* the byte order is big endian, not little endian, so we have some
* swapping to do. Again, if we need it (which I don't think we do).
*/
ate_setmcast(sc);
ate_rxfilter(sc);
/* enable big packets */
WR4(sc, ETH_CFG, RD4(sc, ETH_CFG) | ETH_CFG_BIG);
@ -948,6 +966,7 @@ ate_rxfilter(struct ate_softc *sc)
{
struct ifnet *ifp;
uint32_t reg;
int enabled;
KASSERT(sc != NULL, ("[ate, %d]: sc is NULL!", __LINE__));
ATE_ASSERT_LOCKED(sc);
@ -959,16 +978,22 @@ ate_rxfilter(struct ate_softc *sc)
reg = RD4(sc, ETH_CFG);
reg &= ~(ETH_CFG_CAF | ETH_CFG_MTI | ETH_CFG_UNI);
reg |= ETH_CFG_NBC;
sc->flags &= ~ATE_FLAG_MULTICAST;
/*
* Set new parameters.
*/
if ((ifp->if_flags & IFF_BROADCAST) != 0)
reg &= ~ETH_CFG_NBC;
if ((ifp->if_flags & IFF_PROMISC) != 0)
if ((ifp->if_flags & IFF_PROMISC) != 0) {
reg |= ETH_CFG_CAF;
if ((ifp->if_flags & IFF_ALLMULTI) != 0)
reg |= ETH_CFG_MTI;
} else {
enabled = ate_setmcast(sc);
if (enabled != 0) {
reg |= ETH_CFG_MTI;
sc->flags |= ATE_FLAG_MULTICAST;
}
}
WR4(sc, ETH_CFG, reg);
}
@ -979,8 +1004,9 @@ ateioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
struct mii_data *mii;
struct ifreq *ifr = (struct ifreq *)data;
int drv_flags, flags;
int mask, error = 0;
int mask, error, enabled;
error = 0;
flags = ifp->if_flags;
drv_flags = ifp->if_drv_flags;
switch (cmd) {
@ -1005,11 +1031,13 @@ ateioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
case SIOCADDMULTI:
case SIOCDELMULTI:
/* update multicast filter list. */
ATE_LOCK(sc);
ate_setmcast(sc);
ATE_UNLOCK(sc);
error = 0;
if ((drv_flags & IFF_DRV_RUNNING) != 0) {
ATE_LOCK(sc);
enabled = ate_setmcast(sc);
if (enabled != (sc->flags & ATE_FLAG_MULTICAST))
ate_rxfilter(sc);
ATE_UNLOCK(sc);
}
break;
case SIOCSIFMEDIA: