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Add jumbo frame support to dtsec(4)

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MFC after:	2 weeks
This commit is contained in:
jhibbits 2017-11-17 04:29:32 +00:00
parent 4b8f6e86aa
commit b32e75a29d
1 changed files with 29 additions and 1 deletions
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30
sys/dev/dpaa/if_dtsec.c
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@ -67,6 +67,10 @@ __FBSDID("$FreeBSD$");
#include "if_dtsec_im.h"
#include "if_dtsec_rm.h"
#define DTSEC_MIN_FRAME_SIZE 64
#define DTSEC_MAX_FRAME_SIZE 9600
#define DTSEC_REG_MAXFRM 0x110
/**
* @group dTSEC private defines.
@ -320,6 +324,22 @@ dtsec_fm_port_free_both(struct dtsec_softc *sc)
* @group IFnet routines.
* @{
*/
static int
dtsec_set_mtu(struct dtsec_softc *sc, unsigned int mtu)
{
mtu += ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN + ETHER_CRC_LEN;
DTSEC_LOCK_ASSERT(sc);
if (mtu >= DTSEC_MIN_FRAME_SIZE && mtu <= DTSEC_MAX_FRAME_SIZE) {
bus_write_4(sc->sc_mem, DTSEC_REG_MAXFRM, mtu);
return (mtu);
}
return (0);
}
static int
dtsec_if_enable_locked(struct dtsec_softc *sc)
{
@ -384,6 +404,14 @@ dtsec_if_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
/* Basic functionality to achieve media status reports */
switch (command) {
case SIOCSIFMTU:
DTSEC_LOCK(sc);
if (dtsec_set_mtu(sc, ifr->ifr_mtu))
ifp->if_mtu = ifr->ifr_mtu;
else
error = EINVAL;
DTSEC_UNLOCK(sc);
break;
case SIOCSIFFLAGS:
DTSEC_LOCK(sc);
@ -678,7 +706,7 @@ dtsec_attach(device_t dev)
ifp->if_snd.ifq_drv_maxlen = TSEC_TX_NUM_DESC - 1;
IFQ_SET_READY(&ifp->if_snd);
#endif
ifp->if_capabilities = 0; /* TODO: Check */
ifp->if_capabilities = IFCAP_JUMBO_MTU; /* TODO: HWCSUM */
ifp->if_capenable = ifp->if_capabilities;
/* Attach PHY(s) */