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[IP_SOCKGLUE]: Remove most of the tcp specific calls

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As DCCP needs to be called in the same spots.

Now we have a member in inet_sock (is_icsk), set at sock creation time from
struct inet_protosw->flags (if INET_PROTOSW_ICSK is set, like for TCP and
DCCP) to see if a struct sock instance is a inet_connection_sock for places
like the ones in ip_sockglue.c (v4 and v6) where we previously were looking if
sk_type was SOCK_STREAM, that is insufficient because we now use the same code
for DCCP, that has sk_type SOCK_DCCP.

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnaldo Carvalho de Melo 2005-12-13 23:26:10 -08:00 • committed by David S. Miller
commit d83d8461f9
20 changed files with 97 additions and 83 deletions
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4
include/linux/dccp.h
View file

@ -408,8 +408,6 @@ struct dccp_ackvec;
* @dccps_gar - greatest valid ack number received on a non-Sync; initialized to %dccps_iss
* @dccps_timestamp_time - time of latest TIMESTAMP option
* @dccps_timestamp_echo - latest timestamp received on a TIMESTAMP option
* @dccps_ext_header_len - network protocol overhead (IP/IPv6 options)
* @dccps_pmtu_cookie - Last pmtu seen by socket
* @dccps_packet_size - Set thru setsockopt
* @dccps_role - Role of this sock, one of %dccp_role
* @dccps_ndp_count - number of Non Data Packets since last data packet
@ -434,8 +432,6 @@ struct dccp_sock {
__u32 dccps_timestamp_echo;
__u32 dccps_packet_size;
unsigned long dccps_ndp_count;
__u16 dccps_ext_header_len;
__u32 dccps_pmtu_cookie;
__u32 dccps_mss_cache;
struct dccp_options dccps_options;
struct dccp_ackvec *dccps_hc_rx_ackvec;

1
include/linux/ip.h
View file

@ -155,6 +155,7 @@ struct inet_sock {
__u8 mc_ttl; /* Multicasting TTL */
__u8 pmtudisc;
unsigned recverr : 1,
is_icsk : 1, /* inet_connection_sock? */
freebind : 1,
hdrincl : 1,
mc_loop : 1;

3
include/linux/tcp.h
View file

@ -238,10 +238,9 @@ struct tcp_sock {
__u32 snd_wl1; /* Sequence for window update */
__u32 snd_wnd; /* The window we expect to receive */
__u32 max_window; /* Maximal window ever seen from peer */
__u32 pmtu_cookie; /* Last pmtu seen by socket */
__u32 mss_cache; /* Cached effective mss, not including SACKS */
__u16 xmit_size_goal; /* Goal for segmenting output packets */
__u16 ext_header_len; /* Network protocol overhead (IP/IPv6 options) */
/* XXX Two bytes hole, try to pack */
__u32 window_clamp; /* Maximal window to advertise */
__u32 rcv_ssthresh; /* Current window clamp */

6
include/net/inet_connection_sock.h
View file

@ -60,6 +60,7 @@ struct inet_connection_sock_af_ops {
* @icsk_timeout: Timeout
* @icsk_retransmit_timer: Resend (no ack)
* @icsk_rto: Retransmit timeout
* @icsk_pmtu_cookie Last pmtu seen by socket
* @icsk_ca_ops Pluggable congestion control hook
* @icsk_af_ops Operations which are AF_INET{4,6} specific
* @icsk_ca_state: Congestion control state
@ -68,6 +69,7 @@ struct inet_connection_sock_af_ops {
* @icsk_backoff: Backoff
* @icsk_syn_retries: Number of allowed SYN (or equivalent) retries
* @icsk_probes_out: unanswered 0 window probes
* @icsk_ext_hdr_len: Network protocol overhead (IP/IPv6 options)
* @icsk_ack: Delayed ACK control data
*/
struct inet_connection_sock {
@ -79,15 +81,17 @@ struct inet_connection_sock {
struct timer_list icsk_retransmit_timer;
struct timer_list icsk_delack_timer;
__u32 icsk_rto;
__u32 icsk_pmtu_cookie;
struct tcp_congestion_ops *icsk_ca_ops;
struct inet_connection_sock_af_ops *icsk_af_ops;
unsigned int (*icsk_sync_mss)(struct sock *sk, u32 pmtu);
__u8 icsk_ca_state;
__u8 icsk_retransmits;
__u8 icsk_pending;
__u8 icsk_backoff;
__u8 icsk_syn_retries;
__u8 icsk_probes_out;
/* 2 BYTES HOLE, TRY TO PACK! */
__u16 icsk_ext_hdr_len;
struct {
__u8 pending; /* ACK is pending */
__u8 quick; /* Scheduled number of quick acks */

1
include/net/protocol.h
View file

@ -76,6 +76,7 @@ struct inet_protosw {
};
#define INET_PROTOSW_REUSE 0x01 /* Are ports automatically reusable? */
#define INET_PROTOSW_PERMANENT 0x02 /* Permanent protocols are unremovable. */
#define INET_PROTOSW_ICSK 0x04 /* Is this an inet_connection_sock? */
extern struct net_protocol *inet_protocol_base;
extern struct net_protocol *inet_protos[MAX_INET_PROTOS];