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authorDavid L Stevens <david.stevens@oracle.com>2014-09-29 19:47:59 -0400
committerDavid S. Miller <davem@davemloft.net>2014-09-30 17:10:39 -0400
commite4defc775424a3501caf98d266a8d7616fa53819 (patch)
treeb0f67f185a6d425f32dad5c0c48f9ba49547cbfb /arch/sparc/kernel
parenta12a601ed163578084a48708ae376805f79a1ccf (diff)
sunvnet: upgrade to VIO protocol version 1.6
This patch upgrades the sunvnet driver to support VIO protocol version 1.6. In particular, it adds per-port MTU negotiation, allowing MTUs other than ETH_FRAMELEN with ports using newer VIO protocol versions. Signed-off-by: David L Stevens <david.stevens@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel')
-rw-r--r--arch/sparc/kernel/viohs.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/arch/sparc/kernel/viohs.c b/arch/sparc/kernel/viohs.c
index f8e7dd53e1c7..7ef081a185b1 100644
--- a/arch/sparc/kernel/viohs.c
+++ b/arch/sparc/kernel/viohs.c
@@ -426,6 +426,13 @@ static int process_dreg_info(struct vio_driver_state *vio,
if (vio->dr_state & VIO_DR_STATE_RXREG)
goto send_nack;
+ /* v1.6 and higher, ACK with desired, supported mode, or NACK */
+ if (vio_version_after_eq(vio, 1, 6)) {
+ if (!(pkt->options & VIO_TX_DRING))
+ goto send_nack;
+ pkt->options = VIO_TX_DRING;
+ }
+
BUG_ON(vio->desc_buf);
vio->desc_buf = kzalloc(pkt->descr_size, GFP_ATOMIC);
@@ -453,8 +460,11 @@ static int process_dreg_info(struct vio_driver_state *vio,
pkt->tag.stype = VIO_SUBTYPE_ACK;
pkt->dring_ident = ++dr->ident;
- viodbg(HS, "SEND DRING_REG ACK ident[%llx]\n",
- (unsigned long long) pkt->dring_ident);
+ viodbg(HS, "SEND DRING_REG ACK ident[%llx] "
+ "ndesc[%u] dsz[%u] opt[0x%x] ncookies[%u]\n",
+ (unsigned long long) pkt->dring_ident,
+ pkt->num_descr, pkt->descr_size, pkt->options,
+ pkt->num_cookies);
len = (sizeof(*pkt) +
(dr->ncookies * sizeof(struct ldc_trans_cookie)));