[src/trunk]: src/sys/dev/pci mtu for revision B0 and B1 is supported up to 16...

[ryo <ryo%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/cf9ca7ceab13
branches:  trunk
changeset: 982512:cf9ca7ceab13
user:      ryo <ryo%NetBSD.org@localhost>
date:      Thu Apr 15 09:05:24 2021 +0000

description:
mtu for revision B0 and B1 is supported up to 16338 bytes

diffstat:

 sys/dev/pci/if_aq.c |  27 ++++++++++++++++++++++++---
 1 files changed, 24 insertions(+), 3 deletions(-)

diffs (87 lines):

diff -r 217013f23ee9 -r cf9ca7ceab13 sys/dev/pci/if_aq.c
--- a/sys/dev/pci/if_aq.c       Thu Apr 15 09:04:42 2021 +0000
+++ b/sys/dev/pci/if_aq.c       Thu Apr 15 09:05:24 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_aq.c,v 1.22 2021/04/15 09:04:42 ryo Exp $   */
+/*     $NetBSD: if_aq.c,v 1.23 2021/04/15 09:05:24 ryo Exp $   */
 
 /**
  * aQuantia Corporation Network Driver
@@ -62,7 +62,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_aq.c,v 1.22 2021/04/15 09:04:42 ryo Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_aq.c,v 1.23 2021/04/15 09:05:24 ryo Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_if_aq.h"
@@ -116,6 +116,9 @@
 #define AQ_RSS_HASHKEY_SIZE            40
 #define AQ_RSS_INDIRECTION_TABLE_MAX   64
 
+#define AQ_JUMBO_MTU_REV_A             9000
+#define AQ_JUMBO_MTU_REV_B             16338
+
 /*
  * TERMINOLOGY
  *     MPI = MAC PHY INTERFACE?
@@ -996,6 +999,7 @@
 #define FEATURES_REV_B0                0x20000000
 #define FEATURES_REV_B1                0x40000000
 #define FEATURES_REV_B         (FEATURES_REV_B0|FEATURES_REV_B1)
+       uint32_t sc_max_mtu;
        uint32_t sc_mbox_addr;
 
        bool sc_rbl_enabled;
@@ -2118,6 +2122,7 @@
                    fw_vers);
                sc->sc_features |= FEATURES_REV_A0 |
                    FEATURES_MPI_AQ | FEATURES_MIPS;
+               sc->sc_max_mtu = AQ_JUMBO_MTU_REV_A;
                break;
        case 0x02:
                aprint_normal_dev(sc->sc_dev, "Atlantic revision B0, %s\n",
@@ -2125,6 +2130,7 @@
                sc->sc_features |= FEATURES_REV_B0 |
                    FEATURES_MPI_AQ | FEATURES_MIPS |
                    FEATURES_TPO2 | FEATURES_RPF2;
+               sc->sc_max_mtu = AQ_JUMBO_MTU_REV_B;
                break;
        case 0x0A:
                aprint_normal_dev(sc->sc_dev, "Atlantic revision B1, %s\n",
@@ -2132,10 +2138,13 @@
                sc->sc_features |= FEATURES_REV_B1 |
                    FEATURES_MPI_AQ | FEATURES_MIPS |
                    FEATURES_TPO2 | FEATURES_RPF2;
+               sc->sc_max_mtu = AQ_JUMBO_MTU_REV_B;
                break;
        default:
                aprint_error_dev(sc->sc_dev,
                    "Unknown revision (0x%08x)\n", hwrev);
+               sc->sc_features = 0;
+               sc->sc_max_mtu = ETHERMTU;
                error = ENOTSUP;
                break;
        }
@@ -4740,7 +4749,19 @@
        error = 0;
 
        s = splnet();
-       error = ether_ioctl(ifp, cmd, data);
+       switch (cmd) {
+       case SIOCSIFMTU:
+               if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > sc->sc_max_mtu) {
+                       error = EINVAL;
+               } else {
+                       ifp->if_mtu = ifr->ifr_mtu;
+                       error = 0;      /* no need to reset (no ENETRESET) */
+               }
+               break;
+       default:
+               error = ether_ioctl(ifp, cmd, data);
+               break;
+       }
        splx(s);
 
        if (error != ENETRESET)