[src/trunk]: src/sys extend usbnet to cope with if_upl, if_smsc, and if_umb n...

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

details:   https://anonhg.NetBSD.org/src/rev/0700a8135074
branches:  trunk
changeset: 458659:0700a8135074
user:      mrg <mrg%NetBSD.org@localhost>
date:      Tue Aug 06 00:19:57 2019 +0000

description:
extend usbnet to cope with if_upl, if_smsc, and if_umb needs:

- usbnet_enqueue() can set mbuf flags and csum_data
- usbnet_input() for non-ethernet based devices (upl, umb)
- allow a complete override for ioctl()
- remove converted list -- we have compiling and/or working patches for
  all the devices except for umb(4), will be merged as testing happens

hopefully this is the last ABI change, though  it may end up being
extended for additional smsc(4)  support.


hello for real netbsd 9.99.3!

diffstat:

 sys/dev/usb/if_axe.c  |   6 ++--
 sys/dev/usb/if_axen.c |  10 +++---
 sys/dev/usb/if_cdce.c |  16 +++++-----
 sys/dev/usb/if_ure.c  |   6 ++--
 sys/dev/usb/usbnet.c  |  69 +++++++++++++++++++++++++++++++++++++++++++++-----
 sys/dev/usb/usbnet.h  |  23 +++++++---------
 sys/sys/param.h       |   4 +-
 7 files changed, 92 insertions(+), 42 deletions(-)

diffs (truncated from 385 to 300 lines):

diff -r 817c91b5521f -r 0700a8135074 sys/dev/usb/if_axe.c
--- a/sys/dev/usb/if_axe.c      Mon Aug 05 23:42:48 2019 +0000
+++ b/sys/dev/usb/if_axe.c      Tue Aug 06 00:19:57 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_axe.c,v 1.104 2019/08/04 09:03:46 mrg Exp $ */
+/*     $NetBSD: if_axe.c,v 1.105 2019/08/06 00:19:57 mrg Exp $ */
 /*     $OpenBSD: if_axe.c,v 1.137 2016/04/13 11:03:37 mpi Exp $ */
 
 /*
@@ -87,7 +87,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_axe.c,v 1.104 2019/08/04 09:03:46 mrg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_axe.c,v 1.105 2019/08/06 00:19:57 mrg Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_usb.h"
@@ -1150,7 +1150,7 @@
                        total_len = 0;
                }
 
-               usbnet_enqueue(un, buf, pktlen, flags);
+               usbnet_enqueue(un, buf, pktlen, flags, 0, 0);
                buf += rxlen;
 
        } while (total_len > 0);
diff -r 817c91b5521f -r 0700a8135074 sys/dev/usb/if_axen.c
--- a/sys/dev/usb/if_axen.c     Mon Aug 05 23:42:48 2019 +0000
+++ b/sys/dev/usb/if_axen.c     Tue Aug 06 00:19:57 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_axen.c,v 1.54 2019/08/05 07:03:55 skrll Exp $       */
+/*     $NetBSD: if_axen.c,v 1.55 2019/08/06 00:19:57 mrg Exp $ */
 /*     $OpenBSD: if_axen.c,v 1.3 2013/10/21 10:10:22 yuo Exp $ */
 
 /*
@@ -23,7 +23,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_axen.c,v 1.54 2019/08/05 07:03:55 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_axen.c,v 1.55 2019/08/06 00:19:57 mrg Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_usb.h"
@@ -153,7 +153,7 @@
 }
 
 static void
-axen_miibus_statchg(struct ifnet *ifp)
+axen_mii_statchg(struct ifnet *ifp)
 {
        struct usbnet * const un = ifp->if_softc;
        struct axen_softc * const sc = usbnet_softc(un);
@@ -623,7 +623,7 @@
        un->un_ioctl_cb = axen_ioctl_cb;
        un->un_read_reg_cb = axen_mii_read_reg;
        un->un_write_reg_cb = axen_mii_write_reg;
-       un->un_statchg_cb = axen_miibus_statchg;
+       un->un_statchg_cb = axen_mii_statchg;
        un->un_tx_prepare_cb = axen_tx_prepare;
        un->un_rx_loop_cb = axen_rxeof_loop;
        un->un_init_cb = axen_init;
@@ -857,7 +857,7 @@
                }
 
                usbnet_enqueue(un, buf + 2, pkt_len - 6,
-                              axen_csum_flags_rx(ifp, pkt_hdr));
+                              axen_csum_flags_rx(ifp, pkt_hdr), 0, 0);
 
 nextpkt:
                /*
diff -r 817c91b5521f -r 0700a8135074 sys/dev/usb/if_cdce.c
--- a/sys/dev/usb/if_cdce.c     Mon Aug 05 23:42:48 2019 +0000
+++ b/sys/dev/usb/if_cdce.c     Tue Aug 06 00:19:57 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_cdce.c,v 1.56 2019/08/04 08:59:13 mrg Exp $ */
+/*     $NetBSD: if_cdce.c,v 1.57 2019/08/06 00:19:57 mrg Exp $ */
 
 /*
  * Copyright (c) 1997, 1998, 1999, 2000-2003 Bill Paul <wpaul%windriver.com@localhost>
@@ -40,7 +40,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_cdce.c,v 1.56 2019/08/04 08:59:13 mrg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_cdce.c,v 1.57 2019/08/06 00:19:57 mrg Exp $");
 
 #include <sys/param.h>
 #include <sys/kernel.h>
@@ -81,8 +81,8 @@
 static int     cdce_match(device_t, cfdata_t, void *);
 static void    cdce_attach(device_t, device_t, void *);
 static int     cdce_init(struct ifnet *);
-static void    cdce_rxeof_loop(struct usbnet *, struct usbd_xfer *,
-                               struct usbnet_chain *, uint32_t);
+static void    cdce_rx_loop(struct usbnet *, struct usbd_xfer *,
+                            struct usbnet_chain *, uint32_t);
 static unsigned        cdce_tx_prepare(struct usbnet *, struct mbuf *,
                                struct usbnet_chain *);
 
@@ -136,7 +136,7 @@
        un->un_sc = sc;
        un->un_init_cb = cdce_init;
        un->un_tx_prepare_cb = cdce_tx_prepare;
-       un->un_rx_loop_cb = cdce_rxeof_loop;
+       un->un_rx_loop_cb = cdce_rx_loop;
        un->un_rx_xfer_flags = USBD_SHORT_XFER_OK;
        un->un_tx_xfer_flags = USBD_FORCE_SHORT_XFER;
        un->un_cdata.uncd_rx_bufsz = CDCE_BUFSZ;
@@ -278,8 +278,8 @@
 }
 
 static void
-cdce_rxeof_loop(struct usbnet * un, struct usbd_xfer *xfer,
-               struct usbnet_chain *c, uint32_t total_len)
+cdce_rx_loop(struct usbnet * un, struct usbd_xfer *xfer,
+            struct usbnet_chain *c, uint32_t total_len)
 {
        struct ifnet            *ifp = usbnet_ifp(un);
        struct cdce_softc       *sc = usbnet_softc(un);
@@ -295,7 +295,7 @@
                return;
        }
 
-       usbnet_enqueue(un, c->unc_buf, total_len, 0);
+       usbnet_enqueue(un, c->unc_buf, total_len, 0, 0, 0);
 }
 
 static unsigned
diff -r 817c91b5521f -r 0700a8135074 sys/dev/usb/if_ure.c
--- a/sys/dev/usb/if_ure.c      Mon Aug 05 23:42:48 2019 +0000
+++ b/sys/dev/usb/if_ure.c      Tue Aug 06 00:19:57 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_ure.c,v 1.16 2019/08/04 18:04:18 mrg Exp $  */
+/*     $NetBSD: if_ure.c,v 1.17 2019/08/06 00:19:57 mrg Exp $  */
 /*     $OpenBSD: if_ure.c,v 1.10 2018/11/02 21:32:30 jcs Exp $ */
 
 /*-
@@ -30,7 +30,7 @@
 /* RealTek RTL8152/RTL8153 10/100/Gigabit USB Ethernet device */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_ure.c,v 1.16 2019/08/04 18:04:18 mrg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_ure.c,v 1.17 2019/08/06 00:19:57 mrg Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_usb.h"
@@ -1004,7 +1004,7 @@
                buf += sizeof(rxhdr);
 
                usbnet_enqueue(un, buf, pkt_len - ETHER_CRC_LEN,
-                              ure_rxcsum(ifp, &rxhdr));
+                              ure_rxcsum(ifp, &rxhdr), 0, 0);
 
                pkt_count++;
                
diff -r 817c91b5521f -r 0700a8135074 sys/dev/usb/usbnet.c
--- a/sys/dev/usb/usbnet.c      Mon Aug 05 23:42:48 2019 +0000
+++ b/sys/dev/usb/usbnet.c      Tue Aug 06 00:19:57 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: usbnet.c,v 1.4 2019/08/04 08:59:13 mrg Exp $   */
+/*     $NetBSD: usbnet.c,v 1.5 2019/08/06 00:19:57 mrg Exp $   */
 
 /*
  * Copyright (c) 2019 Matthew R. Green
@@ -33,7 +33,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: usbnet.c,v 1.4 2019/08/04 08:59:13 mrg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: usbnet.c,v 1.5 2019/08/06 00:19:57 mrg Exp $");
 
 #include <sys/param.h>
 #include <sys/kernel.h>
@@ -115,11 +115,12 @@
  * usbnet_rxeof() is designed to be the done callback for rx completion.
  * it provides generic setup and finalisation, calls a different usbnet
  * rx_loop callback in the middle, which can use usbnet_enqueue() to
- * enqueue a packet for higher levels.
+ * enqueue a packet for higher levels (or usbnet_input() if previously
+ * using if_input() path.)
  */
 void
 usbnet_enqueue(struct usbnet * const un, uint8_t *buf, size_t buflen,
-               int flags)
+              int csum_flags, uint32_t csum_data, int mbuf_flags)
 {
        USBNETHIST_FUNC(); USBNETHIST_CALLED();
        struct ifnet *ifp = &un->un_ec.ec_if;
@@ -135,13 +136,38 @@
 
        m_set_rcvif(m, ifp);
        m->m_pkthdr.len = m->m_len = buflen;
-       m->m_pkthdr.csum_flags = flags;
+       m->m_pkthdr.csum_flags = csum_flags;
+       m->m_pkthdr.csum_data = csum_data;
+       m->m_flags |= mbuf_flags;
        memcpy(mtod(m, char *), buf, buflen);
 
        /* push the packet up */
        if_percpuq_enqueue(ifp->if_percpuq, m);
 }
 
+void
+usbnet_input(struct usbnet * const un, uint8_t *buf, size_t buflen)
+{
+       USBNETHIST_FUNC(); USBNETHIST_CALLED();
+       struct ifnet * const ifp = usbnet_ifp(un);
+       struct mbuf *m;
+
+       KASSERT(mutex_owned(&un->un_rxlock));
+
+       m = usbnet_newbuf();
+       if (m == NULL) {
+               ifp->if_ierrors++;
+               return;
+       }
+
+       m_set_rcvif(m, ifp);
+       m->m_pkthdr.len = m->m_len = buflen;
+       memcpy(mtod(m, char *), buf, buflen);
+
+       /* push the packet up */
+       if_input(ifp, m);
+}
+
 /*
  * A frame has been uploaded: pass the resulting mbuf chain up to
  * the higher level protocols.
@@ -152,7 +178,7 @@
        USBNETHIST_FUNC(); USBNETHIST_CALLED();
        struct usbnet_chain *c = priv;
        struct usbnet * const un = c->unc_un;
-       struct ifnet *ifp = &un->un_ec.ec_if;
+       struct ifnet * const ifp = usbnet_ifp(un);
        uint32_t total_len;
 
        mutex_enter(&un->un_rxlock);
@@ -787,6 +813,9 @@
        struct usbnet * const un = ifp->if_softc;
        int error;
 
+       if (un->un_override_ioctl_cb)
+               return (*un->un_override_ioctl_cb)(ifp, cmd, data);
+
        error = ether_ioctl(ifp, cmd, data);
        if (error == ENETRESET && un->un_ioctl_cb)
                error = (*un->un_ioctl_cb)(ifp, cmd, data);
@@ -946,6 +975,14 @@
 
 /* Autoconf management. */
 
+static bool
+usbnet_empty_eaddr(struct usbnet *un)
+{
+       return (un->un_eaddr[0] == 0 && un->un_eaddr[1] == 0 &&
+               un->un_eaddr[2] == 0 && un->un_eaddr[3] == 0 &&
+               un->un_eaddr[4] == 0 && un->un_eaddr[5] == 0);
+}
+
 /*
  * usbnet_attach() and usbnet_attach_ifp() perform setup of the relevant
  * 'usbnet'.  The first is enough to enable device access (eg, endpoints
@@ -954,6 +991,9 @@
  *
  * Always call usbnet_detach(), even if usbnet_attach_ifp() is skippped.
  * Also usable as driver detach directly.
+ *
+ * To skip ethernet configuration (eg, point-to-point), make sure that
+ * the un_eaddr[] is fully zero.
  */
 void
 usbnet_attach(struct usbnet *un,
@@ -1054,7 +1094,17 @@
 
        /* Attach the interface. */
        if_attach(ifp);
-       ether_ifattach(ifp, un->un_eaddr);
+
+       /*
+        * If ethernet address is all zero, skip ether_ifattach() and
+        * instead attach bpf here..
+        */
+       if (!usbnet_empty_eaddr(un)) {
+               ether_ifattach(ifp, un->un_eaddr);
+       } else {
+               if_alloc_sadl(ifp);
+               bpf_attach(ifp, DLT_RAW, 0);
+       }
 }
 
 int
@@ -1101,7 +1151,10 @@
                ifmedia_delete_instance(&mii->mii_media, IFM_INST_ANY);
        }
        if (ifp->if_softc) {
-               ether_ifdetach(ifp);
+               if (!usbnet_empty_eaddr(un))
+                       ether_ifdetach(ifp);