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Implement task #11620: Add outgoing VLAN PCP support for Ethernet level QoS

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Apply rebased patch from Timmy Brolin
This commit is contained in:
Dirk Ziegelmeier 2018-10-19 22:30:17 +02:00
parent 64bc2c3df7
commit 95aba99f41
5 changed files with 66 additions and 34 deletions
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29
src/core/tcp.c
View File

@ -11,7 +11,7 @@
* Common functions for the TCP implementation, such as functions
* for manipulating the data structures and the TCP timer functions. TCP functions
* related to input and output is found in tcp_in.c and tcp_out.c respectively.\n
*
*
* TCP connection setup
* --------------------
* The functions used for setting up connections is similar to that of
@ -24,7 +24,7 @@
* - tcp_listen() and tcp_listen_with_backlog()
* - tcp_accept()
* - tcp_connect()
*
*
* Sending TCP data
* ----------------
* TCP data is sent by enqueueing the data with a call to tcp_write() and
@ -34,7 +34,7 @@
* - tcp_write()
* - tcp_output()
* - tcp_sent()
*
*
* Receiving TCP data
* ------------------
* TCP data reception is callback based - an application specified
@ -44,7 +44,7 @@
* window.
* - tcp_recv()
* - tcp_recved()
*
*
* Application polling
* -------------------
* When a connection is idle (i.e., no data is either transmitted or
@ -62,7 +62,7 @@
* - tcp_close()
* - tcp_abort()
* - tcp_err()
*
*
*/
/*
@ -469,7 +469,7 @@ tcp_close_shutdown_fin(struct tcp_pcb *pcb)
* a closing state), the connection is closed, and put in a closing state.
* The pcb is then automatically freed in tcp_slowtmr(). It is therefore
* unsafe to reference it (unless an error is returned).
*
*
* The function may return ERR_MEM if no memory
* was available for closing the connection. If so, the application
* should wait and try again either by using the acknowledgment
@ -797,7 +797,7 @@ tcp_accept_null(void *arg, struct tcp_pcb *pcb, err_t err)
* When an incoming connection is accepted, the function specified with
* the tcp_accept() function will be called. The pcb has to be bound
* to a local port with the tcp_bind() function.
*
*
* The tcp_listen() function returns a new connection identifier, and
* the one passed as an argument to the function will be
* deallocated. The reason for this behavior is that less memory is
@ -812,7 +812,7 @@ tcp_accept_null(void *arg, struct tcp_pcb *pcb, err_t err)
* The backlog limits the number of outstanding connections
* in the listen queue to the value specified by the backlog argument.
* To use it, your need to set TCP_LISTEN_BACKLOG=1 in your lwipopts.h.
*
*
* @param pcb the original tcp_pcb
* @param backlog the incoming connections queue limit
* @return tcp_pcb used for listening, consumes less memory.
@ -892,6 +892,9 @@ tcp_listen_with_backlog_and_err(struct tcp_pcb *pcb, u8_t backlog, err_t *err)
lpcb->netif_idx = NETIF_NO_INDEX;
lpcb->ttl = pcb->ttl;
lpcb->tos = pcb->tos;
#if LWIP_VLAN_PCP
lpcb->netif_hints.tci = pcb->netif_hints.tci;
#endif /* LWIP_VLAN_PCP */
#if LWIP_IPV4 && LWIP_IPV6
IP_SET_TYPE_VAL(lpcb->remote_ip, pcb->local_ip.type);
#endif /* LWIP_IPV4 && LWIP_IPV6 */
@ -1049,7 +1052,7 @@ again:
* Connects to another host. The function given as the "connected"
* argument will be called when the connection has been established.
* Sets up the pcb to connect to the remote host and sends the
* initial SYN segment which opens the connection.
* initial SYN segment which opens the connection.
*
* The tcp_connect() function returns immediately; it does not wait for
* the connection to be properly setup. Instead, it will call the
@ -1721,14 +1724,14 @@ tcp_kill_prio(u8_t prio)
mprio = LWIP_MIN(TCP_PRIO_MAX, prio);
/* We want to kill connections with a lower prio, so bail out if
/* We want to kill connections with a lower prio, so bail out if
* supplied prio is 0 - there can never be a lower prio
*/
if (mprio == 0) {
return;
}
/* We only want kill connections with a lower prio, so decrement prio by one
/* We only want kill connections with a lower prio, so decrement prio by one
* and start searching for oldest connection with same or lower priority than mprio.
* We want to find the connections with the lowest possible prio, and among
* these the one with the longest inactivity time.
@ -2051,7 +2054,7 @@ tcp_sent(struct tcp_pcb *pcb, tcp_sent_fn sent)
* @ingroup tcp_raw
* Used to specify the function that should be called when a fatal error
* has occurred on the connection.
*
*
* If a connection is aborted because of an error, the application is
* alerted of this event by the err callback. Errors that might abort a
* connection are when there is a shortage of memory. The callback
@ -2101,7 +2104,7 @@ tcp_accept(struct tcp_pcb *pcb, tcp_accept_fn accept)
* number of TCP coarse grained timer shots, which typically occurs
* twice a second. An interval of 10 means that the application would
* be polled every 5 seconds.
*
*
* When a connection is idle (i.e., no data is either transmitted or
* received), lwIP will repeatedly poll the application by calling a
* specified callback function. This can be used either as a watchdog

3
src/core/tcp_in.c
View File

@ -690,6 +690,9 @@ tcp_listen_input(struct tcp_pcb_listen *pcb)
#if LWIP_CALLBACK_API || TCP_LISTEN_BACKLOG
npcb->listener = pcb;
#endif /* LWIP_CALLBACK_API || TCP_LISTEN_BACKLOG */
#if LWIP_VLAN_PCP
npcb->netif_hints.tci = pcb->netif_hints.tci;
#endif /* LWIP_VLAN_PCP */
/* inherit socket options */
npcb->so_options = pcb->so_options & SOF_INHERITED;
npcb->netif_idx = pcb->netif_idx;

22
src/include/lwip/netif.h
View File

@ -248,14 +248,20 @@ typedef u8_t netif_addr_idx_t;
#define NETIF_ADDR_IDX_MAX 0x7F
#endif
#if LWIP_NETIF_HWADDRHINT || LWIP_VLAN_PCP
#define LWIP_NETIF_USE_HINTS 1
struct netif_hint {
#if LWIP_NETIF_HWADDRHINT
#define LWIP_NETIF_USE_HINTS 1
struct netif_hint {
netif_addr_idx_t addr_hint;
};
#else /* LWIP_NETIF_HWADDRHINT */
#define LWIP_NETIF_USE_HINTS 0
#endif /* LWIP_NETIF_HWADDRHINT */
u8_t addr_hint;
#endif
#if LWIP_VLAN_PCP
/** VLAN hader is set if this is >= 0 (but must be <= 0xFFFF) */
s32_t tci;
#endif
};
#else /* LWIP_NETIF_HWADDRHINT || LWIP_VLAN_PCP */
#define LWIP_NETIF_USE_HINTS 0
#endif /* LWIP_NETIF_HWADDRHINT || LWIP_VLAN_PCP*/
/** Generic data structure used for all lwIP network interfaces.
* The following fields should be filled in by the initialization
@ -348,7 +354,7 @@ struct netif {
u8_t flags;
/** descriptive abbreviation */
char name[2];
/** number of this interface. Used for @ref if_api and @ref netifapi_netif,
/** number of this interface. Used for @ref if_api and @ref netifapi_netif,
* as well as for IPv6 zones */
u8_t num;
#if LWIP_IPV6_AUTOCONFIG

34
src/include/lwip/opt.h
View File

@ -677,6 +677,18 @@
#define ETHARP_SUPPORT_VLAN 0
#endif
/**
* LWIP_VLAN_PCP==1: Enable outgoing VLAN taggning of frames on a per-PCB basis
* for QoS purposes. With this feature enabled, each PCB has a new variable: "tci".
* (Tag Control Identifier). The TCI contains three fields: VID, CFI and PCP.
* VID is the VLAN ID, which should be set to zero.
* The "CFI" bit is used to enable or disable VLAN tags for the PCB.
* PCP (Priority Code Point) is a 3 bit field used for Ethernet level QoS.
*/
#ifndef LWIP_VLAN_PCP
#define LWIP_VLAN_PCP 0
#endif
/** LWIP_ETHERNET==1: enable ethernet support even though ARP might be disabled
*/
#if !defined LWIP_ETHERNET || defined __DOXYGEN__
@ -1548,13 +1560,13 @@
* link level header. The default is 14, the standard value for
* Ethernet.
*/
#if !defined PBUF_LINK_HLEN || defined __DOXYGEN__
#if defined LWIP_HOOK_VLAN_SET && !defined __DOXYGEN__
#define PBUF_LINK_HLEN (18 + ETH_PAD_SIZE)
#else /* LWIP_HOOK_VLAN_SET */
#define PBUF_LINK_HLEN (14 + ETH_PAD_SIZE)
#endif /* LWIP_HOOK_VLAN_SET */
#endif
#if !defined PBUF_LINK_HLEN || defined __DOXYGEN__
#if (defined LWIP_HOOK_VLAN_SET || LWIP_VLAN_PCP) && !defined __DOXYGEN__
#define PBUF_LINK_HLEN (18 + ETH_PAD_SIZE)
#else /* LWIP_HOOK_VLAN_SET || LWIP_VLAN_PCP */
#define PBUF_LINK_HLEN (14 + ETH_PAD_SIZE)
#endif /* LWIP_HOOK_VLAN_SET || LWIP_VLAN_PCP */
#endif
/**
* PBUF_LINK_ENCAPSULATION_HLEN: the number of bytes that should be allocated
@ -1626,7 +1638,7 @@
#endif
/**
* LWIP_NETIF_EXT_STATUS_CALLBACK==1: Support an extended callback function
* LWIP_NETIF_EXT_STATUS_CALLBACK==1: Support an extended callback function
* for several netif related event that supports multiple subscribers.
* @see netif_ext_status_callback
*/
@ -2423,7 +2435,7 @@
* All addresses that have a scope according to the default policy (link-local
* unicast addresses, interface-local and link-local multicast addresses) should
* now have a zone set on them before being passed to the core API, although
* lwIP will currently attempt to select a zone on the caller's behalf when
* lwIP will currently attempt to select a zone on the caller's behalf when
* necessary. Applications that directly assign IPv6 addresses to interfaces
* (which is NOT recommended) must now ensure that link-local addresses carry
* the netif's zone. See the new ip6_zone.h header file for more information and
@ -3061,8 +3073,8 @@
* - src: source eth address
* - dst: destination eth address
* - eth_type: ethernet type to packet to be sent\n
*
*
*
*
* Return values:
* - &lt;0: Packet shall not contain VLAN header.
* - 0 &lt;= return value &lt;= 0xFFFF: Packet shall contain VLAN header. Return value is prio_vid in host byte order.

12
src/netif/ethernet.c
View File

@ -273,8 +273,16 @@ ethernet_output(struct netif * netif, struct pbuf * p,
struct eth_hdr *ethhdr;
u16_t eth_type_be = lwip_htons(eth_type);
#if ETHARP_SUPPORT_VLAN && defined(LWIP_HOOK_VLAN_SET)
s32_t vlan_prio_vid = LWIP_HOOK_VLAN_SET(netif, p, src, dst, eth_type);
#if ETHARP_SUPPORT_VLAN
s32_t vlan_prio_vid;
#ifdef LWIP_HOOK_VLAN_SET
vlan_prio_vid = LWIP_HOOK_VLAN_SET(netif, p, src, dst, eth_type);
#elif LWIP_VLAN_PCP
vlan_prio_vid = -1;
if (netif->hints && (netif->hints->tci >= 0)) {
vlan_prio_vid = (u16_t)netif->hints->tci;
}
#endif
if (vlan_prio_vid >= 0) {
struct eth_vlan_hdr *vlanhdr;