svn commit: r325927 - head/sys/dev/dpaa

[Justin Hibbits]

Author: jhibbits
Date: Fri Nov 17 04:29:32 2017
New Revision: 325927
URL: https://svnweb.freebsd.org/changeset/base/325927

Log:
  Add jumbo frame support to dtsec(4)
  
  MFC after:    2 weeks

Modified:
  head/sys/dev/dpaa/if_dtsec.c

Modified: head/sys/dev/dpaa/if_dtsec.c
==============================================================================
--- head/sys/dev/dpaa/if_dtsec.c        Fri Nov 17 04:10:52 2017        
(r325926)
+++ head/sys/dev/dpaa/if_dtsec.c        Fri Nov 17 04:29:32 2017        
(r325927)
@@ -67,7 +67,11 @@ __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.
  * @{
@@ -321,6 +325,22 @@ dtsec_fm_port_free_both(struct dtsec_softc *sc)
  * @{
  */
 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)
 {
        int error;
@@ -384,6 +404,14 @@ dtsec_if_ioctl(struct ifnet *ifp, u_long command, cadd
 
        /* 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) */
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