diff options
Diffstat (limited to 'usr/src/uts/common/sys/socketvar.h')
| -rw-r--r-- | usr/src/uts/common/sys/socketvar.h | 41 |
1 files changed, 38 insertions, 3 deletions
diff --git a/usr/src/uts/common/sys/socketvar.h b/usr/src/uts/common/sys/socketvar.h index 8221c620a8..b3f51cc0e1 100644 --- a/usr/src/uts/common/sys/socketvar.h +++ b/usr/src/uts/common/sys/socketvar.h @@ -21,6 +21,7 @@ /* * Copyright (c) 1996, 2010, Oracle and/or its affiliates. All rights reserved. + * Copyright 2015 Joyent, Inc. */ /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ @@ -99,6 +100,7 @@ struct sockaddr_ux { typedef struct sonodeops sonodeops_t; typedef struct sonode sonode_t; +typedef boolean_t (*so_krecv_f)(sonode_t *, mblk_t *, size_t, int, void *); struct sodirect_s; @@ -241,6 +243,10 @@ struct sonode { struct sof_instance *so_filter_top; /* top of stack */ struct sof_instance *so_filter_bottom; /* bottom of stack */ clock_t so_filter_defertime; /* time when deferred */ + + /* Kernel direct receive callbacks */ + so_krecv_f so_krecv_cb; /* recv callback */ + void *so_krecv_arg; /* recv cb arg */ }; #define SO_HAVE_DATA(so) \ @@ -294,15 +300,16 @@ struct sonode { #define SS_OOBPEND 0x00002000 /* OOB pending or present - poll */ #define SS_HAVEOOBDATA 0x00004000 /* OOB data present */ #define SS_HADOOBDATA 0x00008000 /* OOB data consumed */ -#define SS_CLOSING 0x00010000 /* in process of closing */ +#define SS_CLOSING 0x00010000 /* in process of closing */ #define SS_FIL_DEFER 0x00020000 /* filter deferred notification */ #define SS_FILOP_OK 0x00040000 /* socket can attach filters */ #define SS_FIL_RCV_FLOWCTRL 0x00080000 /* filter asserted rcv flow ctrl */ + #define SS_FIL_SND_FLOWCTRL 0x00100000 /* filter asserted snd flow ctrl */ #define SS_FIL_STOP 0x00200000 /* no more filter actions */ - #define SS_SODIRECT 0x00400000 /* transport supports sodirect */ +#define SS_FILOP_UNSF 0x00800000 /* block attaching unsafe filters */ #define SS_SENTLASTREADSIG 0x01000000 /* last rx signal has been sent */ #define SS_SENTLASTWRITESIG 0x02000000 /* last tx signal has been sent */ @@ -318,7 +325,8 @@ struct sonode { /* * Sockets that can fall back to TPI must ensure that fall back is not - * initiated while a thread is using a socket. + * initiated while a thread is using a socket. Otherwise this disables all + * future filter attachment. */ #define SO_BLOCK_FALLBACK(so, fn) \ ASSERT(MUTEX_NOT_HELD(&(so)->so_lock)); \ @@ -334,6 +342,24 @@ struct sonode { } \ } +/* + * Sockets that can fall back to TPI must ensure that fall back is not + * initiated while a thread is using a socket. Otherwise this disables all + * future unsafe filter attachment. Safe filters can still attach after + * we execute the function in which this macro is used. + */ +#define SO_BLOCK_FALLBACK_SAFE(so, fn) \ + ASSERT(MUTEX_NOT_HELD(&(so)->so_lock)); \ + rw_enter(&(so)->so_fallback_rwlock, RW_READER); \ + if ((so)->so_state & SS_FALLBACK_COMP) { \ + rw_exit(&(so)->so_fallback_rwlock); \ + return (fn); \ + } else if (((so)->so_state & SS_FILOP_UNSF) == 0) { \ + mutex_enter(&(so)->so_lock); \ + (so)->so_state |= SS_FILOP_UNSF; \ + mutex_exit(&(so)->so_lock); \ + } + #define SO_UNBLOCK_FALLBACK(so) { \ rw_exit(&(so)->so_fallback_rwlock); \ } @@ -942,6 +968,15 @@ extern struct sonode *socreate(struct sockparams *, int, int, int, int, extern int so_copyin(const void *, void *, size_t, int); extern int so_copyout(const void *, void *, size_t, int); +/* + * Functions to manipulate the use of direct receive callbacks. This should not + * be used outside of sockfs and ksocket. These are generally considered a use + * once interface for a socket and will cause all outstanding data on the socket + * to be flushed. + */ +extern int so_krecv_set(sonode_t *, so_krecv_f, void *); +extern void so_krecv_unblock(sonode_t *); + #endif /* |