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# Copyright (c) 2016 Cisco and/or its affiliates.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Proxy ARP library"""

from resources.libraries.python.VatExecutor import VatTerminal


class ProxyArp(object):
    """Proxy ARP utilities."""

    @staticmethod
    def vpp_add_proxy_arp(node, lo_ip4_addr, hi_ip4_addr):
        """Enable proxy ARP for a range of IP addresses.

        :param node: VPP node to enable proxy ARP.
        :param lo_ip4_addr: The lower limit of the IP addresses.
        :param hi_ip4_addr: The upper limit of the IP addresses.
        :type node: dict
        :type lo_ip4_addr: str
        :type hi_ip4_addr: str
        """
        with VatTerminal(node) as vat:
            vat.vat_terminal_exec_cmd_from_template("add_proxy_arp.vat",
                                                    lo_ip4_addr=lo_ip4_addr,
                                                    hi_ip4_addr=hi_ip4_addr)
on_count; u32 tag; /* for debugging */ /* The allocation arena */ void *heap; /* Segment must be mapped at this address, or no supper */ uword ssvm_va; /* The actual mmap size */ uword ssvm_size; u32 master_pid; u32 slave_pid; u8 *name; void *opaque[SSVM_N_OPAQUE]; /* Set when the master application thinks it's time to make the donuts */ volatile u32 ready; ssvm_segment_type_t type; } ssvm_shared_header_t; typedef struct { ssvm_shared_header_t *sh; uword ssvm_size; uword requested_va; u32 my_pid; u8 *name; u8 numa; /**< Numa requested at alloc time */ int i_am_master; union { int fd; /**< memfd segments */ int attach_timeout; /**< shm segments attach timeout (sec) */ }; } ssvm_private_t; always_inline void ssvm_lock (ssvm_shared_header_t * h, u32 my_pid, u32 tag) { if (h->owner_pid == my_pid) { h->recursion_count++; return; } while (clib_atomic_test_and_set (&h->lock)) CLIB_PAUSE (); h->owner_pid = my_pid; h->recursion_count = 1; h->tag = tag; } always_inline void ssvm_lock_non_recursive (ssvm_shared_header_t * h, u32 tag) { while (clib_atomic_test_and_set (&h->lock)) CLIB_PAUSE (); h->tag = tag; } always_inline void ssvm_unlock (ssvm_shared_header_t * h) { if (--h->recursion_count == 0) { h->owner_pid = 0; h->tag = 0; clib_atomic_release (&h->lock); } } always_inline void ssvm_unlock_non_recursive (ssvm_shared_header_t * h) { h->tag = 0; clib_atomic_release (&h->lock); } static inline void * ssvm_push_heap (ssvm_shared_header_t * sh) { u8 *oldheap; oldheap = clib_mem_set_heap (sh->heap); return ((void *) oldheap); } static inline void ssvm_pop_heap (void *oldheap) { clib_mem_set_heap (oldheap); } static inline void * ssvm_mem_alloc (ssvm_private_t * ssvm, uword size) { u8 *oldheap; void *rv; oldheap = clib_mem_set_heap (ssvm->sh->heap); rv = clib_mem_alloc (size); clib_mem_set_heap (oldheap); return (rv); } #define foreach_ssvm_api_error \ _(NO_NAME, "No shared segment name", -100) \ _(NO_SIZE, "Size not set (master)", -101) \ _(CREATE_FAILURE, "Create failed", -102) \ _(SET_SIZE, "Set size failed", -103) \ _(MMAP, "mmap failed", -104) \ _(SLAVE_TIMEOUT, "Slave map timeout", -105) typedef enum { #define _(n,s,c) SSVM_API_ERROR_##n = c, foreach_ssvm_api_error #undef _ } ssvm_api_error_enum_t; #define SSVM_API_ERROR_NO_NAME (-10) int ssvm_master_init (ssvm_private_t * ssvm, ssvm_segment_type_t type); int ssvm_slave_init (ssvm_private_t * ssvm, ssvm_segment_type_t type); void ssvm_delete (ssvm_private_t * ssvm); int ssvm_master_init_shm (ssvm_private_t * ssvm); int ssvm_slave_init_shm (ssvm_private_t * ssvm); void ssvm_delete_shm (ssvm_private_t * ssvm); int ssvm_master_init_memfd (ssvm_private_t * memfd); int ssvm_slave_init_memfd (ssvm_private_t * memfd); void ssvm_delete_memfd (ssvm_private_t * memfd); int ssvm_master_init_private (ssvm_private_t * ssvm); int ssvm_slave_init_private (ssvm_private_t * ssvm); void ssvm_delete_private (ssvm_private_t * ssvm); ssvm_segment_type_t ssvm_type (const ssvm_private_t * ssvm); u8 *ssvm_name (const ssvm_private_t * ssvm); #endif /* __included_ssvm_h__ */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */