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From: David Gibson <david@gibson.dropbear.id.au>
To: Stefano Brivio <sbrivio@redhat.com>
Cc: Laurent Vivier <lvivier@redhat.com>, passt-dev@passt.top
Subject: Re: [PATCH 12/24] tap: make tap_update_mac() generic
Date: Fri, 9 Feb 2024 16:02:01 +1100	[thread overview]
Message-ID: <ZcWxySZET8SFY2ve@zatzit> (raw)
In-Reply-To: <20240208181051.12433bf7@elisabeth>

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On Thu, Feb 08, 2024 at 06:10:51PM +0100, Stefano Brivio wrote:
> On Tue, 6 Feb 2024 12:49:40 +1100
> David Gibson <david@gibson.dropbear.id.au> wrote:
> 
> > On Fri, Feb 02, 2024 at 03:11:39PM +0100, Laurent Vivier wrote:
> > > Use ethhdr rather than tap_hdr.
> > > 
> > > Signed-off-by: Laurent Vivier <lvivier@redhat.com>  
> > 
> > Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
> > 
> > I'd be happy to see this applied immediately, in advance of the rest
> > of the series.
> 
> Oh, hm, do you need this for something around the flow table? I just
> have one nit below:

Need? No, not really.  I just think it's clearer, independent of the
VU changes.

> 
> > > ---
> > >  tap.c     | 6 +++---
> > >  tap.h     | 2 +-
> > >  tcp_buf.c | 8 ++++----
> > >  udp.c     | 4 ++--
> > >  4 files changed, 10 insertions(+), 10 deletions(-)
> > > 
> > > diff --git a/tap.c b/tap.c
> > > index 3ea03f720d6d..29f389057ac1 100644
> > > --- a/tap.c
> > > +++ b/tap.c
> > > @@ -447,13 +447,13 @@ size_t tap_send_frames(const struct ctx *c, const struct iovec *iov, size_t n)
> > >   * @eth_d:	Ethernet destination address, NULL if unchanged
> > >   * @eth_s:	Ethernet source address, NULL if unchanged
> > >   */
> > > -void tap_update_mac(struct tap_hdr *taph,
> > > +void eth_update_mac(struct ethhdr *eh,
> 
> ...function comment should be updated accordingly.
> 
> > >  		    const unsigned char *eth_d, const unsigned char *eth_s)
> > >  {
> > >  	if (eth_d)
> > > -		memcpy(taph->eh.h_dest, eth_d, sizeof(taph->eh.h_dest));
> > > +		memcpy(eh->h_dest, eth_d, sizeof(eh->h_dest));
> > >  	if (eth_s)
> > > -		memcpy(taph->eh.h_source, eth_s, sizeof(taph->eh.h_source));
> > > +		memcpy(eh->h_source, eth_s, sizeof(eh->h_source));
> > >  }
> > >  
> > >  PACKET_POOL_DECL(pool_l4, UIO_MAXIOV, pkt_buf);
> > > diff --git a/tap.h b/tap.h
> > > index 466d91466c3d..437b9aa2b43f 100644
> > > --- a/tap.h
> > > +++ b/tap.h
> > > @@ -74,7 +74,7 @@ void tap_icmp6_send(const struct ctx *c,
> > >  		    const void *in, size_t len);
> > >  int tap_send(const struct ctx *c, const void *data, size_t len);
> > >  size_t tap_send_frames(const struct ctx *c, const struct iovec *iov, size_t n);
> > > -void tap_update_mac(struct tap_hdr *taph,
> > > +void eth_update_mac(struct ethhdr *eh,
> > >  		    const unsigned char *eth_d, const unsigned char *eth_s);
> > >  void tap_listen_handler(struct ctx *c, uint32_t events);
> > >  void tap_handler_pasta(struct ctx *c, uint32_t events,
> > > diff --git a/tcp_buf.c b/tcp_buf.c
> > > index d70e7f810e4a..4c1f00c1d1b2 100644
> > > --- a/tcp_buf.c
> > > +++ b/tcp_buf.c
> > > @@ -218,10 +218,10 @@ void tcp_buf_update_l2(const unsigned char *eth_d, const unsigned char *eth_s)
> > >  		struct tcp4_l2_buf_t *b4 = &tcp4_l2_buf[i];
> > >  		struct tcp6_l2_buf_t *b6 = &tcp6_l2_buf[i];
> > >  
> > > -		tap_update_mac(&b4->taph, eth_d, eth_s);
> > > -		tap_update_mac(&b6->taph, eth_d, eth_s);
> > > -		tap_update_mac(&b4f->taph, eth_d, eth_s);
> > > -		tap_update_mac(&b6f->taph, eth_d, eth_s);
> > > +		eth_update_mac(&b4->taph.eh, eth_d, eth_s);
> > > +		eth_update_mac(&b6->taph.eh, eth_d, eth_s);
> > > +		eth_update_mac(&b4f->taph.eh, eth_d, eth_s);
> > > +		eth_update_mac(&b6f->taph.eh, eth_d, eth_s);
> > >  	}
> > >  }
> > >  
> > > diff --git a/udp.c b/udp.c
> > > index 96b4e6ca9a85..db635742319b 100644
> > > --- a/udp.c
> > > +++ b/udp.c
> > > @@ -283,8 +283,8 @@ void udp_update_l2_buf(const unsigned char *eth_d, const unsigned char *eth_s)
> > >  		struct udp4_l2_buf_t *b4 = &udp4_l2_buf[i];
> > >  		struct udp6_l2_buf_t *b6 = &udp6_l2_buf[i];
> > >  
> > > -		tap_update_mac(&b4->taph, eth_d, eth_s);
> > > -		tap_update_mac(&b6->taph, eth_d, eth_s);
> > > +		eth_update_mac(&b4->taph.eh, eth_d, eth_s);
> > > +		eth_update_mac(&b6->taph.eh, eth_d, eth_s);
> > >  	}
> > >  }
> > >    
> > 
> 

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

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  reply	other threads:[~2024-02-09  5:02 UTC|newest]

Thread overview: 83+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-02-02 14:11 [PATCH 00/24] Add vhost-user support to passt Laurent Vivier
2024-02-02 14:11 ` [PATCH 01/24] iov: add some functions to manage iovec Laurent Vivier
2024-02-05  5:57   ` David Gibson
2024-02-06 14:28     ` Laurent Vivier
2024-02-07  1:01       ` David Gibson
2024-02-07 10:00         ` Laurent Vivier
2024-02-06 16:10   ` Stefano Brivio
2024-02-07 14:02     ` Laurent Vivier
2024-02-07 14:57       ` Stefano Brivio
2024-02-02 14:11 ` [PATCH 02/24] pcap: add pcap_iov() Laurent Vivier
2024-02-05  6:25   ` David Gibson
2024-02-06 16:10   ` Stefano Brivio
2024-02-02 14:11 ` [PATCH 03/24] checksum: align buffers Laurent Vivier
2024-02-05  6:02   ` David Gibson
2024-02-07  9:01     ` Stefano Brivio
2024-02-02 14:11 ` [PATCH 04/24] checksum: add csum_iov() Laurent Vivier
2024-02-05  6:07   ` David Gibson
2024-02-07  9:02   ` Stefano Brivio
2024-02-02 14:11 ` [PATCH 05/24] util: move IP stuff from util.[ch] to ip.[ch] Laurent Vivier
2024-02-05  6:13   ` David Gibson
2024-02-07  9:03     ` Stefano Brivio
2024-02-08  0:04       ` David Gibson
2024-02-02 14:11 ` [PATCH 06/24] ip: move duplicate IPv4 checksum function to ip.h Laurent Vivier
2024-02-05  6:16   ` David Gibson
2024-02-07 10:40   ` Stefano Brivio
2024-02-07 23:43     ` David Gibson
2024-02-02 14:11 ` [PATCH 07/24] ip: introduce functions to compute the header part checksum for TCP/UDP Laurent Vivier
2024-02-05  6:20   ` David Gibson
2024-02-07 10:41   ` Stefano Brivio
2024-02-02 14:11 ` [PATCH 08/24] tcp: extract buffer management from tcp_send_flag() Laurent Vivier
2024-02-06  0:24   ` David Gibson
2024-02-08 16:57   ` Stefano Brivio
2024-02-02 14:11 ` [PATCH 09/24] tcp: extract buffer management from tcp_conn_tap_mss() Laurent Vivier
2024-02-06  0:47   ` David Gibson
2024-02-08 16:59   ` Stefano Brivio
2024-02-02 14:11 ` [PATCH 10/24] tcp: rename functions that manage buffers Laurent Vivier
2024-02-06  1:48   ` David Gibson
2024-02-08 17:10     ` Stefano Brivio
2024-02-02 14:11 ` [PATCH 11/24] tcp: move buffers management functions to their own file Laurent Vivier
2024-02-02 14:11 ` [PATCH 12/24] tap: make tap_update_mac() generic Laurent Vivier
2024-02-06  1:49   ` David Gibson
2024-02-08 17:10     ` Stefano Brivio
2024-02-09  5:02       ` David Gibson [this message]
2024-02-02 14:11 ` [PATCH 13/24] tap: export pool_flush()/tapX_handler()/packet_add() Laurent Vivier
2024-02-02 14:29   ` Laurent Vivier
2024-02-06  1:52   ` David Gibson
2024-02-11 23:15   ` Stefano Brivio
2024-02-12  2:22     ` David Gibson
2024-02-02 14:11 ` [PATCH 14/24] udp: move udpX_l2_buf_t and udpX_l2_mh_sock out of udp_update_hdrX() Laurent Vivier
2024-02-06  1:59   ` David Gibson
2024-02-11 23:16   ` Stefano Brivio
2024-02-02 14:11 ` [PATCH 15/24] udp: rename udp_sock_handler() to udp_buf_sock_handler() Laurent Vivier
2024-02-06  2:14   ` David Gibson
2024-02-11 23:17     ` Stefano Brivio
2024-02-02 14:11 ` [PATCH 16/24] packet: replace struct desc by struct iovec Laurent Vivier
2024-02-06  2:25   ` David Gibson
2024-02-11 23:18     ` Stefano Brivio
2024-02-02 14:11 ` [PATCH 17/24] vhost-user: compare mode MODE_PASTA and not MODE_PASST Laurent Vivier
2024-02-06  2:29   ` David Gibson
2024-02-02 14:11 ` [PATCH 18/24] vhost-user: introduce virtio API Laurent Vivier
2024-02-06  3:51   ` David Gibson
2024-02-11 23:18     ` Stefano Brivio
2024-02-12  2:26       ` David Gibson
2024-02-02 14:11 ` [PATCH 19/24] vhost-user: introduce vhost-user API Laurent Vivier
2024-02-07  2:13   ` David Gibson
2024-02-02 14:11 ` [PATCH 20/24] vhost-user: add vhost-user Laurent Vivier
2024-02-07  2:40   ` David Gibson
2024-02-11 23:19     ` Stefano Brivio
2024-02-12  2:47       ` David Gibson
2024-02-13 15:22         ` Stefano Brivio
2024-02-14  2:05           ` David Gibson
2024-02-11 23:19   ` Stefano Brivio
2024-02-12  2:49     ` David Gibson
2024-02-12 10:02       ` Laurent Vivier
2024-02-12 16:56         ` Stefano Brivio
2024-02-02 14:11 ` [PATCH 21/24] vhost-user: use guest buffer directly in vu_handle_tx() Laurent Vivier
2024-02-09  4:26   ` David Gibson
2024-02-02 14:11 ` [PATCH 22/24] tcp: vhost-user RX nocopy Laurent Vivier
2024-02-09  4:57   ` David Gibson
2024-02-02 14:11 ` [PATCH 23/24] udp: " Laurent Vivier
2024-02-09  5:00   ` David Gibson
2024-02-02 14:11 ` [PATCH 24/24] vhost-user: remove tap_send_frames_vu() Laurent Vivier
2024-02-09  5:01   ` David Gibson

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