#ifndef IPV6_H
#define IPV6_H

#include <asm/byteorder.h>

#include "built_in.h"

/*
 * IPv6 fixed header
 *
 * BEWARE, it is incorrect. The first 4 bits of flow_lbl
 * are glued to priority now, forming "class".
 */
struct ipv6hdr {
#if defined(__LITTLE_ENDIAN_BITFIELD)
	__extension__ uint8_t priority:4,
			      version:4;
#elif defined(__BIG_ENDIAN_BITFIELD)
	__extension__ uint8_t version:4,
			      priority:4;
#else
# error "Please fix <asm/byteorder.h>"
#endif
	uint8_t flow_lbl[3];
	uint16_t payload_len;
	uint8_t nexthdr;
	uint8_t hop_limit;
	struct in6_addr saddr;
	struct in6_addr daddr;
} __packed;

#endif /* IPV6_H */
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<tr><th>author</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2016-09-22 02:51:48 -0400</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2016-09-22 02:51:48 -0400</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=b80b8d7a974ea4888a0a598cec217a6c500a0cdb'>b80b8d7a974ea4888a0a598cec217a6c500a0cdb</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=b80b8d7a974ea4888a0a598cec217a6c500a0cdb'>patch</a>)</td></tr>
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<div class='commit-subject'>Merge branch 'mlx5e-xdp'</div><div class='commit-msg'>Tariq Toukan says:

====================
mlx5e XDP support

This series adds XDP support in mlx5e driver.
This includes the use cases: XDP_DROP, XDP_PASS, and XDP_TX.

Single stream performance tests show 16.5 Mpps for XDP_DROP,
and 12.4 Mpps for XDP_TX, with nice scalability for multiple streams/rings.

This rate of XDP_DROP is lower than the 32 Mpps we got in previous
implementation, when Striding RQ was used.

We moved to non-Striding RQ, as some XDP_TX requirements (like headroom,
packet-per-page) cannot be satisfied with the current Striding RQ HW,
and we decided to fully support both DROP/TX.

Few directions are considered in order to enable the faster rate for XDP_DROP,
e.g a possibility for users to enable Striding RQ so they choose optimized
XDP_DROP on the price of partial XDP_TX functionality, or some HW changes.

Series generated against net-next commit:
cf714ac147e0 'ipvlan: Fix dependency issue'

Thanks,
Tariq

V2:
* patch 8:
 - when XDP_TX fails, call mlx5e_page_release and drop the packet.
 - update xdp_tx counter within mlx5e_xmit_xdp_frame.
   (mlx5e_xmit_xdp_frame return value becomes obsolete, change it to void)
 - drop the packet for unknown XDP return code.
* patch 9:
 - use a boolean for xdp_doorbell in SQ struct, instead of dragging it
   throughout the functions calls.
 - handle doorbell and counters within mlx5e_xmit_xdp_frame.
====================

Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
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